VARDHAMAN COLLEGE OF ENGINEERING · 2018-12-10 · Question Paper Code: A1125 VARDHAMAN COLLEGE OF...

Hall Ticket No: Question Paper Code: A1125

VARDHAMAN COLLEGE OF ENGINEERING (AUTONOMOUS)

B. Tech VI Semester Supplementary Examinations, May - 2018 (Regulations: VCE-R11/R11A)

ENVIRONMENTAL ENGINEERING-I (Civil Engineering)

Date: 28 May, 2018 FN Time: 3 hours Max Marks: 75

Answer ONE question from each Unit All Questions Carry Equal Marks

Unit – I

1. a) Predict the population for the years 1981, 1991, 1994, and 2001 from the following census figures of a town by Arithmetic Progressive Method.

7M

b) Compute “Fire demand” for a city having population of 1, 40,000 using National Board of Underwriters, Kuichling’s, Buston’s and Freeman formula.

8M

2. a) Explain With the help of neat sketches: i. Canal Intake ii. Lake intake

8M

b) The census record of a town is as follows. Calculate the population after two decades by arithmetical increase method and geometrical increase method.

Year 1981 1991 2001 2011

Population 19800 42000 75000 110000

7M

Unit – II

3. a) Mention the principle of setline and give design details of a plain sedimentation tank. 8M b) What is flocculation? Explain.

7M

4. a) Write the differences between Slow Sand Filters (SSF) and Rapic Sand Filters (RSF). 8M b) Describe breakpoint chlorination with the help of a sketch.

7M

Unit – III

5. a) Write about the construction requirements of manholes. 8M b) A sample of wastewater has an ultimate BOD of 280mg/dl and a 5 day BOD of 280 mg/dl.

Calculate 20-day BOD of this sample.

7M

6. a) With the help of a neat sketch explain carbon cycle of decomposition. 7M b) Explain the principles of house drainage.

8M

Unit – IV

7. a) Write about process description of Triclikng filter with the help of a diagram. 8M b) Write notes on disposal of grit.

7M

8. a) Write about screening devices for treatment of waste water with diagram. 8M b) Write notes on biological treatment of waste water.

7M

Unit – V

9. a) Sketch and explain the functioning of service reservoirs. 8M b) Explain the working of a septic tank with neat sketch.

7M

10. a) Explain the method of pipe analysis by equivalent pipe method. 8M b) Explain sludge digestion tank with a neat sketch. 7M




OBJECT ORIENTED DESIGN AND PATTERNS (Common to Computer Science and Engineering & Information Technology)



Unit – I

1. a) Explain in detail basic principles of UML as a Language. 6M b) With neat diagrams explain all kinds of relationship in detail.

9M

2. a) Discuss in detail – ‘Structural things’. 8M b) How to Model concrete instances? With the help of an object diagram explain the same.

7M

Unit – II

3. a) Define and Explain ‘Use Case’. Give a simple example of a Use Case with Variations. 8M b) Draw the UML Class Diagram for the following Dependency Relationships:

i. Mailbox depends on MessageQueue ii. Message doesn't depends on Mailbox iii. Connection depends on Telephone, MailSystem, Message, Mailbox iv. Telephone depends on Connection

7M

4. a) With diagrams explain the following: i. Multiplicities ii. Composition iii. Association iv. Interface Types

8M

b) Consider the case study ‘Voice mail system’ and provide State Diagram for ‘Connection’.

7M

Unit – III

5. a) Discuss the date class with suitable code segments for the following by using Java library: i. Constructor for current date ii. Prints specified date in a standard format iii. Tests if this date is after the specified date iv. Tests if this date is before the specified date v. Compare two Date objects for ordering

7M

b) What are interfaces? Illustrate with an example, an implementation of ‘Icon’ interface type to display a Message and to display image icon.

8M

6. a) Illustrate with an example, the use of Comparable &Comparator interface. 7M b) What is the significance of overloading? Write a Java program to overload the following

operators in a date class: i. Operator ‘+’ : returns a date by adding a specified number of days to date ii. Operator ‘-’ : returns a date by subtracting a specified number of days from a date iii. Operator ‘>>’ and Operator ‘<<’ : to read and write a date

8M

Unit – IV

7. a) What is a pattern? Briefly explain the pattern characteristics. 6M b) Explain the Strategy pattern and Layout managers on GUI containers.

9M

8. a) What is inheritance? Explain with a suitable example. 5M b) Explain the Template method pattern. Illustrate the same for a daily routing of a worker

with a class diagram. 10M

Cont…2

:: 2 ::

Unit – V

9. a) Explain the context and solutions of visitor pattern with suitable class diagram. 5M b) Write a note on collections frame work. Illustrate how to add a new collection with the

help of a code.

10M

10. a) Explain the adapter pattern and proxy pattern and show their implementations with a real world example.

10M

b) Write a note on thread synchronization. 5M




NETWORK SECURITY AND CRYPTOGRAPHY

(Computer Science and Engineering)



Unit – I

1. a) Account on the following: i. Different techniques used in steganography ii. Essential ingredients of symmetric cipher

10M

b) Analyze the various types of cryptanalytic attacks based on the amount of information known to the cryptanalyst.

5M

2. a) Consider an automated teller machine (ATM) in which users provide a personal identification number (PIN) and a card for account access. Give examples of confidentiality, integrity and availability requirements associated with the system.

6M

b) Show your calculations and the result to encrypt the message “SHORT EXAMPLE” using the Hill Cipher with the key

7 8

11 11

[Note: Alphabet A should start at 0].

9M

Unit – II

3. a) Show that the inverse of 5 modulo 101 is 599. 7M b) Explain AES structure with a neat diagram.

8M

4. a) What is triple encryption? How many keys are used in triple encryption? 5M b) Find the two smallest positive integer solutions to the following system of equivalences:

i. x ≡ 2 (mod 5) ii. x ≡ 5 (mod 8) iii. x ≡ 4 (mod 37)

10M

Unit – III

5. a) Explain Diffie-Hellman key Exchange with an example. 8M b) Explain the working of HMAC algorithm with neat diagram.

7M

6. a) Explain Message Authentication Code for authentication tied to plaintext and authentication tied to ciphertext with a neat diagram.

8M

b) In a public-key system using RSA, you intercept the ciphertext C=10 sent to a user whose public key is e=5, n=35. What is the plaintext M? Write the corresponding pseudocode.

7M

Unit – IV

7. a) Give examples of applications of IPSec. What services are provided by IPSec? 7M b) Discuss briefly about the X.509 certificate format.

8M

8. a) Why is R64 conversion useful for an e-mail application? Explain in detail. 7M b) What four requirements were defined for Kerberos?

8M

Cont…2

:: 2 ::

Unit – V

9. a) With the help of the timing diagram explain the various messages exchanged between client and server in handshake protocol.

9M

b) What is the difference between an SSL connection and an SSL session?

6M

10. a) Explain the role of trusted systems in enforcing security. 8M b) What is the difference between a packet-filtering router and a stateful inspection

firewall? 7M




LANGUAGE PROCESSORS

(Common to Computer Science and Engineering & Information Technology)



Unit – I

1. a) With a block diagram explain the role of a lexical analyzer. 7M b) Give the recursive definition of a regular expression. Also write a transition diagram for

the relational operators, identifiers and keywords.

8M

2. a) What is left factoring? Write an algorithm for left factoring a grammar. 8M b) Eliminate left-recursion from the following grammar:

E E+T/T T T*F/F F (E)/id

7M

Unit – II

3. a) Define handle. Explain the conflicts that occur in shift reduce parsing with example. 7M b) Write an algorithm to construct the SLR parsing table.

8M

4. Consider the grammar below:

S L=R

S R

L *R

L id

R L Construct the canonical LR(1) items, transition diagram and CLR parsing table.

15M

Unit – III

5. a) Define syntax directed definition. Give and explain the syntax-directed definition for a simple desk calculator.

8M

b) What is dependency graph? Design a dependency graph for the following grammar: E E1+E2 E E1*E2

7M

6. a) Write a note on flow-of-control statements. 5M b) Give and explain the general form of a three-address code. Also write the three-address

code and quadruple representation for the following arithmetic expression: x := -a *b + -a*b

10M

Unit – IV

7. a) Explain the types of static type checking errors with an example. 8M b) Write the translation scheme for checking the types of the following statements:

S → id := E S → if E then S1 S → while E do S1 S → S1 ; S2

7M

Cont…2

::2::

8. a) Explain the fields of activation record with a neat diagram. 7M b) What is parameter passing? Explain the different parameter passing methods.

8M

Unit – V

9. a) Consider the three address code sequence:

:

:

: /

t a b

t t c

t t x

Generate the optimal machine sequence.

7M

b) What is the cost of the following code sequences: i. MOV b, R0 ADD c, R0 MOV R0, a

ii. MOV b, a ADD c, a

iii. MOV *R1, *R0 ADD *R2, *R0

iv. Add R2, R1 MOV R1, a

8M

10. a) What is basic block? Write an algorithm to partition the sequence of three address code

statements into basic blocks? 7M

b) Consider the following program snapshot: int i, prod, a[20], b[20]; ... prod = 0; i = 0; do prod = prod + a[i]*b[i]; i++; while (i < 20); Generate the three address code.

8M




GEO TECHNICAL ENGINEERING-II (Civil Engineering)



Unit – I

1. a) What are the objectives of soil exploration? Explain. 7M b) With the sketch of the soil sampler, Define:

i. Area ratio ii. Outside clearance iii. Inside clearance

8M

2. a) Explain various methods of borings adopted for soil exploration. 7M b) Explain standard penetration test with the help of neat sketch.

8M

Unit – II

3. a) Explain the Method of Slices of determining the factor of safety of finite slopes. 8M b) A slope 1 in 2 with a height of 8m has the following soil properties: γ=18 KN/m3,

C=28KN/m2 and Φ=100. Calculate: i. factor of safety with respect to cohesion ii. Critical height of slope

7M

4. a) A finite slope has failed in your city. What may be the possible causes? Explain any two of them briefly.

5M

b) An embankment has a slope of 1.5H : 1V with a height of 9m and the soil properties are C=25kPa, Φ=200 and γ=18kN/m3. Determine the factor of safety for a trial slip circle passing through the toe using the method of slices. The Fellinius angles are α=260 and β=350. Use method of slices.

10M

Unit – III

5. a) Derive the equations of active and passive earth pressures. 5M b) Discuss Culmann's method for the determination of active earth pressure.

10M

6. a) Briefly explain any two types of retaining walls. 5M b) Calculate the total lateral thrust and its location on the retaining wall of height 6 m high

using the data given below: For top 2.5m soil: Φ=360 and γ=18 kN/m3 For bottom 3.5m soil: Φ=320 and γ=17 kN/m3

Plot the variation of active earth pressure and locate the point of action of total active thrust.

10M

R

Unit – IV

7. a) What are different types of shallow foundations? Explain with neat sketches 8M b) Compute the Safe bearing capacity of a continuous footing of 1.5m wide at a depth of

1.5m in a soil with γ=18 KN/m3, C=18KN/m2 and Φ=250. What is the safe load per metre run if factor of safety is 3. Take the values of Terzaghi's bearing capacity factors as Nc=25, Nq=12.5 and Nγ=10.

7M

8. a) Differentiate between general shear failure and local shear failure. 7M b) Discuss the effect of water table on the bearing capacity of soil.

8M

Cont…2

:: 2 ::

Unit – V

9. a) In what circumstances do you recommend the deep foundations for a structure? List the different types of piles based on the load transfer mechanism.

5M

b) There are 9 piles of 400mm diameter and 10m length driven into a sandy soil at 1m centre-to-centre in a 3x3 arrangement. If the soil has c=0, Φ=200, K=1.5 and γ=15.45kN/m3, calculate the load carrying capacity of the pile group using Factor of safety=2. Take Nq=10 and Nγ=5.39.

10M

10. a) What are the functions of well foundations? Explain the different components of a Well foundation with a neat sketch.

8M

b) Briefly explain the different types and shapes of well foundations. 7M




DIGITAL COMMUNICATIONS (Electronics and Communication Engineering)



Unit – I

1. a) What is slope overload distortion? Show that for a sinusoid signal maximum SNR under slope overload is proportional to sampling rate cubed.

10M

b) A delta modulator system is designed to operate at 5 times nyquist rate for a signal with 3KHz Bw. Determine maximum amplitude of 2KHz input sinusoid for DM so that there is one slope overload. Take step size is 250mv.

5M

2. a) Explain DPCM system and mention its advantage over PCM. 8M b) A lowpass signal of 3.4KHz bandwidth and amplitude over -5V to +5V range is sampled at

Nyquist rate and converted to 8 bit PCM with uniform quantiser. Mean square value of message signal is 2V-squared. Find: i. Normalised power of quantization noise ii. bit transmission iii. (SNR)Q in dB

7M

Unit – II

3. a) Compare digital modulation schemes with BER curves in terms of bandwidth requirement, power requirement and BER. Indicate one application in each case.

8M

b) Discuss practical pulse shaping employed for zero S . How is S studied employing

eye pattern?

7M

4. a) Discuss how SNR is optimized using matched filter receivers. List three properties of matched filter.

9M

b) Binary data are transmitted over a microwave link at the rate of 106 bits/sec and PSD of noise at the receiver input is 10-10W/Hz. Find the average power of the carrier required

to maintain average 410e for non coherent FSK. Indicate required channel BW.

6M

Unit – III

5. a) What is self-information? How to find the average information of symbols in long independent sequence.

7M

b) Determine the capacity of the channel shown in the Fig.1.

Fig.1

8M

6. a) You are given 4 messages x1,x2,x3, and x4 with respective probabilities 0.1 .0.2,0.3 and 0.4. i. Device a code with Shannon –fano code for these messages and draw the code tree ii. Calculate the efficiency and redundancy of the code iii. Calculate the probabilities of 0’s and 1‘s in the code

8M

b) Consider a source with 8 alphabets A to H with respective Probabilities of 0.22, 0.20, 0.18, 0.15, 0.10, 0.08, 0.05 and 0.02.Construct a binary Huffman code (as low as possible) and determine the code efficiency.

7M

Cont…2

:: 2 ::

Unit – IV

7. a) For a Systematic (6,3) linear block code, the parity matrix P is given by:

1 0 1

0 1 1

1 1 0

P

i. Find the possible code-vectors ii. Find the Hamming weight of each code-vector and minimum distance dmin

8M

b) For the (6, 3) systemic code in part (a) construct syndrome calculation circuit .If the received Code-vector R = [110010] detect and correct the single error that has occurred due to noise.

7M

8. a) State and explain properties of Cyclic codes. 5M b) For a (7, 4) single error cyclic codes g(x) = 1+x+x3find code –vectors for the following D(x)

using non-systematic and systematic form: i. D(x)= 1001 ii. D(x)= 1101 iii. D(x)= 1010

10M

Unit – V

9.

a) The convolution encodes has 2 2, 1, 1G x x x x generator. Construct encoder,

find generated code word in both time domain and transform domain.

8M

b) For the above encoder draw state diagram and tree structure.

7M

10. a) Block diagram of convolution encoder is given in Fig.2 below:

Fig.2

i. Draw state diagram and indicate rate of the encoder ii. List the differences between convolution codes and block code

7M

b) Draw the encoder shown in Fig.3, find code rate, constraint length, generator matrix, impulse response and code word.

Fig.3

8M



B. Tech VI Semester Supplementary Examinations, May - 2018 (Regulations: VCE-R11/11A)

EMBEDDED SYSTEMS

(Electronics and Communication Engineering)



Unit – I

1. a) Explain characteristics of Embedded computing applications and also discuss why microprocessors are efficient to design the digital systems.

7M

b) Explain architecture design process in designing hardware and software components of embedded system taking the example of GPS Moving Map.

8M

2. a) Explain embedded design process in detail. 7M b) Draw the architecture of a digital still camera and explain the process of capturing image

with the help of sequence diagram.

8M

Unit – II

3. a) With a neat diagram explain task states and task switching in RTOS. 7M b) Define semaphore. Explain any three methods of protecting shared data.

8M

4. a) Explain reentrant function with an example. 7M b) With concept explain the following:

i. Message queues ii. Mailboxes iii. Pipes iv. Events

8M

Unit – III

5. a) What are the solutions for shared data problems? Explain the role of semaphores in resolving the problems associated with deadly embrace.

7M

b) With an example, explain reentrant function in RTOS.

8M

6. a) List the basic functions and types of RTOS. Discuss various types of task scheduling techniques used in RTOS.

8M

b) Differentiate between hard and soft real time systems.

7M

Unit – IV

7. a) Explain the concept of Cross Compiler and Cross assembler in Embedded System. 8M b) Elaborate with in block diagram the debugging tool software only monitors.

7M

8. a) Explain how the embedded system is loaded into a target system. 7M b) Illustrate the use of segments in a tool chain.

8M

Unit – V

9. a) With a neat block diagram explain I2C bus. 8M b) With a neat timing diagram explain instruction level parallelism.

7M

10. a) Explain CAN bus and its functions. 8M b) Write an example case study on Internet Security issues in Internet enabled embedded

system. 7M




WIRELESS AND MOBILE COMPUTING (Information Technology)



Unit – I

1. a) What is meant by handover technique? What are the different types of handover? 9M b) Differentiate between infrared and Radio transmissions.

6M

2. a) Explain IEEE 802.11 MAC packet structure with a neat diagram. 8M b) Discuss how valid configuration of Hiper LAN MAC frames is done with a neat diagram.

7M

Unit – II

3. a) Explain the characteristics of a communication device. 7M b) Explain CSMA Protocol.

8M

4. a) Give the Comparison of SDMA and TDMA mechanisms. 7M b) With necessary diagrams, explain how MACA Protocol can avoid exposed and hidden

terminal problem.

8M

Unit – III

5. a) Explain the working of Destination sequence distance vector routing protocol for MANETs

8M

b) Why is timeout freezing required in case of mobile node? What are the modifications made in data link and TCP layers to enforce timeout freezing.

7M

6. a) What are the functions of HA and FA in the mobile IP protocol? How does an agent discover COA when a mobile station node visits foreign network?

8M

b) Explain any four properties, applications and security in MANETs.

7M

Unit – IV

7. a) Explain the indexed and hash based method of data dissemination. 8M b) Write short on context aware computing.

7M

8. a) Explain different selective tuning techniques in detail. 10M b) Write short note on Mobile data Query processing.

5M

Unit – V

9. a) Explain the protocol architecture of WAP. 9M b) How J2ME supports building mobile applications.

6M

10. a) Explain link management in Bluetooth. 8 M b) Discuss the Bluetooth security mechanism in detail. 7 M




MICROPROCESSORS AND INTERFACING

(Common to Electronics and Communication Engineering & Electrical and Electronics Engineering)



Unit – I

1. a) List the various registers in the execution unit of 8086 microprocessor and explain the typical application of each register.

8M

b) With a neat timing diagram, explain in brief the write cycle of 8086 in minimum mode.

7M

2. a) What do you mean by addressing modes? List different addressing modes with examples supported by 8086.

9M

b) Explain the function of the following pins in 8086 microprocessor.

i. MXMN /

ii. BHE

iii. DEN

iv. ALE

6M

Unit – II

3. a) Write a program to find the largest number from a given unordered array of 8 bit data, stored in location LIST.

7M

b) With an example, explain the instructions MOV, PUSH, POP and XCHG.

8M

4. a) What is macro? How does it differ from procedure? Give an example. 7M b) Write an assembly language program to find average of two numbers.

8M

Unit – III

5. a) Draw the block diagram of 8255? Explain the control logic of 8255. 7M b) Write the general algorithm for ADC interfacing? Draw the timing diagram of ADC

0808/0809.

8M

6. a) Interface two 32K×8 EPROM and two 32K×8 RAM to 8086 in minimum mode, select suitable address range. Use 3 to 8 decoder to select memory chips.

7M

b) Develop a scheme to interface a 7 segment display to 8086 with the PPID and write an ALP to display 0 – 9 in regular interval.

8M

Unit – IV

7. a) Draw the block diagram of 8259 and explain the initialization sequence of the same. 7M b) Explain in brief different modes of operation of 8254.

8M

8. a) Briefly describe the conditions which cause the 8086 to perform each of the following types of interrupts type 0 to type 4.

7M

b) Explain the interfacing and refreshing of DRAM in the IBM PC.

8M

Unit – V

9. a) Discuss mode instruction format and status instruction formats of 8251. 7M b) Draw and discuss the register set of 80386 and explain a typical function of each register

in brief.

8M

10. a) Explain in brief RS-423A serial data standard. 7M b) Explain the salient features of 80286 microprocessor. 8M




DIGITAL SIGNAL PROCESSING




Unit – I

1. a) Define LTI system, stability and causality. 7M

b) Check the following systems for their linearity and shift variance properties:

i. 10logy n x n

ii.

2

2

1

1y n x n

x n

8M

2. a) Define a signal, system, frequency response and impulse response. 7M

b) y n x n 2 . Is this system linear, time invariant, memory less, causal and stable?

8M

Unit – II

3. a) Show that convolution in time domain is multiplication in frequency domain. 7M

b) Calculate 8 point DFT of 1,1 .,1,1x n

8M

4. a) Derive the signal flow graph of radix 2 DIT-FFT algorithm using 8 points. 8M b) Use 8 point radix-2 DIT-FFT algorithm to find the DFT of the sequence:

0.707,1,0.707,0, 0.707, 1, 0.707,0 .x n

7M

Unit – III

5.

a) Find Z-transform and ROC of 2

5 12 1 3 .

6 2

n n

x n u n u n

7M

b) Obtain the direct form– 1 and cascade realization of the following LTI system.

13 9 1

1 2 3 4 1 3 212 24 24

y n y n y n y n x n x n x n

8M

6. a) Plot the pole-zero pattern and determine which of the following systems are stable:

i. 1 0.8 2 2y n y n y n x n x n

ii. 2 1 0.8 2 0.8 2y n y n y n x n x n

8M

b) Find the digital network in direct and transposed form for the system described by the difference equation.

2 0.3 1 0.5 2 0.7 1 0.9 2 .y n x n x n x n y n y n

7M

Unit – IV

7. a) Find the impulse response h n of a linear phase FIR filter of length 4N for which the

frequency response at 0w and 2

w

is given by 0 1Hr and 1

2 2

Hr

9M

b) Write short notes on: i. Blackman window ii. Hamming window

6M

Cont…2

:: 2 ::

8. a) Compare analog and digital filters. What are the requirements for the digital filter to be causal?

5M

b) Design an analog Butterworth lowpass filter that has -2dB passband attenuation at frequency of 20 rad/sec and at least -10dB stopband attenuation at 30 rad/sec.

10M

Unit – V

9. a) Explain the method of sampling rate conversion by a factor I/D. 8M b) Draw the block diagram of poly phase filter structure for down sampling value M=3.

7M

10. a) Explain the up sampling and down sampling with a suitable examples. 8M b) Consider the signal x(n)=anu(n), a<1:

i. Determine the spectrum X(w) ii. The signal x(n) is applied to a decimator that reduces the rate by 2. Determine the

output spectrum. Show that the spectrum in part is simply Fourier transform of x(2n)

7M



B. Tech VI Semester Supplementary Examinations, May - 2018 (Regulations: VCE-R11/11A)

FINITE ELEMENT MODELLING AND ANALYSIS (Aeronautical Engineering)



Unit – I

1. a) Why Polynomial functions are preferred over trigonometrical functions? What are generalised coordinates?

6M

b) What is convergence? What are the conditions of convergence?

9M

2. a) What is Geometrical Isotropy? 5M b) Derive the 2D Polynomial Shape function for CST and find the relation between

generalized coordinate and nodal displacement.

10M

Unit – II

3. a) Write the difference between Lagrangian and Hermit shape function. 6M b) With examples explain convergence criterion.

9M

4. a) What is plane stress and plain strain problems? 5M b) Derive the shape function for a 4 noded quadrilateral element using Lagrange’s methods.

10M

Unit – III

5. a) What are iso-parametric, sub parametric and super parametric elements. 8M b) Prove that in two noded bar element used for solving problem of a rod subjected to axial

loads, the strains are expected to be most accurate at the midpoint of the element.

7M

6. a) Explain h-refinement and p-refinement of mesh. 5M b) Derive strain matrix, Jacobian matrix for CST element.

10M

Unit – IV

7. a) Explain Gauss elimination method algorithm. 8M

b) Compare the values of I = dxx

x )2

cos(1

1

2

using two point Gauss quadrature.

7M

8. a) What are banded matrixes, explain band width, front width and their minimization. 8M b) Explain frontal technique.

7M

Unit – V

9. a) Explain structured and unstructured mesh generation. 7M b) Write a note on commercially available FEA packages.

8M

10. a) Explain pre and post processor with respect to commercial package. 8M b) What are the symmetric operations? 7M




WATER RESOURCES ENGINEERING-II

(Civil Engineering)



Unit – I

1. a) You are in charge of a project in the following situations. Explain what type of reservoir you recommend and why: i. A perennial river where floods are common ii. A non perennial river in a southern state iii. A river flowing very near to any coming city

12M

b) Explain the importance of dead storage in a reservoir with a neat sketch.

3M

2. a) Classify the dam based on construction materials. 5M b) The mean monthly discharges of a river in a dry year are as given below:

Month Mean Flow Month Mean Flow

Jan 32.0 July 44.0

Feb 62.0 Aug 71.0

Mar 83.0 Sept 97.0

April 59.0 Oct 75.0

May 24.0 Nov 47.0

June 23.0 Dec 35.0

Determine the minimum capacity of a reservoir if the entire annual flow is to be drawn off at a uniform rate.

10M

Unit – II

3. a) What do you understand by a gravity dam? Explain various forces that are acting on a gravity dam.

8M

b) Distinguish between a low gravity dam and a high gravity dam. Derive the expression used for such a distinction.

7M

4. a) Sketch with details any two types of Earthen dams. 8M b) The following Fig.1 given the profile of a dam with reservoir level as shown. Of the

coefficient of friction is 0.75 is the dam safe against sliding? Take weight density of concrete=2.4t/m3. (Neglect the uplift pressure).

Fig.1

7M

Cont…2

:: 2 ::

Unit – III

5. Explain the design procedure of Trapezoidal notch.

15M

6. a) Enumerate the various types of canal drops and explain why are drops are constructed in an irrigation canal.

7M

b) What is a distributory head regulator? What are the functions of a distributory head regulator?

8M

Unit – IV

7. a) Draw neat layout of diversion head works and indicate the various components of the system. Briefly indicate the function of each component.

9M

b) Differentiate between a weir and barrage.

6M

8. a) Explain the procedure of designing Bligh’s creep theory for the sub-surface flow. 7M b) Discuss in brief various causes of failure of weirs and their remedies.

8M

Unit – V

9. a) What is spill way? What are the essential requirements of a spill way. 7M b) Name the different types of cross drainage works. Explain how you would avoid one

type of cross drainage work and prefer to adopt another type by changing alignment of the canal taking off from a head work.

8M

10. a) Explain an Ogee spillway with a neat sketch. How it is designed. 7M b) How spillways are classified? Describe briefly any two types of spillways. 8M




POWER ELECTRONICS (Electrical and Electronics Engineering)



Unit – I

1. a) Derive an expression for the anode current of thyristor with the help of two transistor analogy.

9M

b) Draw the VI characteristics of an SCR and describe the different regions and operating points in it.

6M

2. a) Using the cross-sectional diagram, describe the structure of IGBTs. 7M b) Write short notes on the turn-ON methods of SCRs.

8M

Unit – II

3. a) With neat diagram and waveform, explain the principle of single phase full converter with purely resistive load. Derive the expression for average output voltage and rms output voltage.

7M

b) A single phase fully controlled thyristor bridge converter supplies a load consisting of R,L and Vc. The inductance L in the circuit is so large that the output current may be considered to be virtually constant. Assume the SCR to be ideal with following data. RMS supply voltage=220V, load resistance=0.5Ω, output current Idc=10A .Determine: i. Firing angle α if Vc=135V ii. α if Vc =-145

8M

4. a) Explain the operation of single phase semi controlled converter connected to R load with neat circuit diagram and wave forms.

8M

b) A single phase 230V, 1kW heater is connected across a single-phase, 230V, 50Hz supply through an SCR. For firing angles of 450 and 900, calculate the power absorbed by the heater element.

7M

Unit – III

5. a) With a neat diagram and waveforms, explain three phase fully wave controlled rectifier. 8M b) For a 3-phase half wave converter driving a large inductive load. Derive an equation for

i. Form factor and ripple factor ii. Thyristor and supply current ratings iii. Thyristor current rating for R=10Ω and α= 30

7M

6. a) Derive an expression for output voltages of single phase fully controlled bridge having source inductance Ls. The overlap angle is µ due to source inductance.

9M

b) With the help of circuit diagram and waveforms explain the operation of single phase AC voltage controller with R L load. Derive an expression for output voltage.

6M

Unit – IV

7. a) Discuss the operation of a Morgan chopper with appropriate waveforms. Also mention the advantages of Morgan chopper compared to Jones chopper.

9M

b) The input voltage to a step up chopper is 6V. The average output voltage is 18V and average load current is 0.4A. The switching frequency is 20kHZ. The filter elements values are 250uH and 420uF. Determine the duty cycle, ripple current of inductor, the peak current of inductor, and the ripple voltage of filter capacitor.

6M

Cont…2

:: 2 ::

8. a) Draw the schematic diagram of a single phase ac chopper and discuss the operation, in

brief, with output voltage and current waveforms. 8M

b) Explain the operation of a single phase to single phase cycloconverter with center tapped transformer configuration.

7M

Unit – V

9. a) Explain with circuit diagram the operation of single phase full bridge inverter with R- L load.

7M

b) The single phase full bridge inverter has a resistive load of R 2.4Ω and the DC input voltage of Vs 48V. Determine: i. The output power ii. The peak and average currents of each transistor

8M

10. a) What is the different pulse width modulation techniques used for inverters? 8M b) The single phase half bridge inverter has a resistive load of 10Ω and the center tap dc

input voltage is 96V. Compute: i. RMS value of the output voltage ii. Fundamental component of the output voltage waveform iii. First five harmonics of the output voltage waveform iv. Fundamental power consumed by the load v. RMS power consumed by the load

7M




HEAT TRANSFER (Mechanical Engineering)



Unit – I

1. a) i. Discuss the different modes of heat transfer ii. A surface of area 0.5m2, emissivity 0.8 and temperature 150 0C is placed in a large,

evacuated chamber whose walls are maintained at 25 0C. Find the rate at which radiation is emitted by the surface? What is the net rate of radiation exchange between the surface and the chamber walls?

Assumptions: Area of the enclosed surface is much less than that of chamber walls. Properties: σ = 5.67*10-8 W/m2.K4

10M

b) A 15cm × 20cm circuit board houses 120 closely spaced 0.12W logic chips. The amount of heat dissipated in 10 hrs and the heat flux on the surface of the circuit board are to be determined. It Assumed that: i. Heat transfer from the back surface of the board is negligible ii. Heat transfer from the front surface is uniform

5M

2. a) i. State the fourier law of heat conduction and thermal diffusivity of material. ii. A large plane wall is subjected to specified heat flux of 700W/m2 and temperature of

80oC on the left surface and no conditions on the right surface. The thermal conductivity is given as k =2.5W/m°C The mathematical formulation, the variation of temperature in the plate, and the right surface temperature are to be determined for steady one-dimensional heat transfer

Fig.1

Assumptions to be made are : Heat conduction is steady and one-dimensional since the wall is large relative to its thickness, and the thermal conditions on both sides of the wall are uniform Thermal conductivity is constant There is no heat generation in the wall

10M

b) A 2-kW resistance heater wire( radius=0.0025m and length=0.7m) with a specified surface temperature of 110oC is used to boil water. The center temperature of the wire is to be determined. Assumptions : i. Heat transfer is steady since there is no change with time ii. Heat transfer is one dimensional since there is thermal symmetry about the center

line and no change in the axial direction iii. Thermal conductivity is constant iv. Heat generation in the heater is uniform Properties: The thermal conductivity is given to be k = 20W/m°C.

5M

Cont…2

:: 2 ::

Unit – II

3. A plane composite wall consists of three different layers in perfect thermal contact. The first layer is 5cm thick with k=20W/(m-K), the second layer is 10cm thick with k=50W/(m-K) and the third layer is 15cm thick with k=100W/(mK). The outer surface of the first layer is in contact with a fluid at 4000C with a surface heat transfer coefficient of 25W/(m2– K), while the outer surface of the third layer is exposed to an ambient at 300C with a surface heat transfer coefficient of 15W/(m2K).Draw the equivalent thermal circuit indicating the numerical values of all the thermal resistances and calculate the heat flux through the composite wall. Also calculate the overall heat transfer coefficient for the composite wall.

15M

4. In order to reduce thermal resistance from the surface of a plane wall 50cm*50cm, 100 pin fins of 1cm diameter and 10cm long are attached. If the fins are made of a material of K=300W/m-K and the value of surface conductance with convective boundary condition is 15W/m2K.Calculate the decrease in thermal resistance and increase in heat transfer rate from the wall, if the temperature difference between wall and surroundings is 170oC.

15M

Unit – III

5. a) What is the physical significance of the Nusselt number and Prandtl Number? 8M b) A long alumnium cylinder 5cm in diameter and initially at 200oC is suddenly exposed to a

convection at 70oC with heat transfer coefficint of 525W/m2K .Calculate the temperature at the radius of 1.25cm, 1 minute after the cylinder is eposed to the environment. Take

the thermo physical properties for aluminium cylinder as =2700Kg/m; C=900J/Kg.K; k=210W/m.K.

7M

6. a) What is free convection? Discuss and draw the velocity profile of free and forced convection.

7M

b) Wind is blowing parallel to the wall (10m) of a house (w=4m, L=10m). The rate of heat loss from that wall is to be determined for given velocity of wind and when the wind velocity is doubled.

Fig.2

Assumptions : i. Steady operating conditions exist ii. The critical Reynolds number is Recr = 5×105 iii. Radiation effects are negligible iv. Air is an ideal gas with constant properties Properties: The properties of air at 1 atm and the film temperature of (Ts =5 , T∞ = 12, k=0.02428W/m. °C, υ=1.413*10-5 m2/s, Pr=0.7340

8M

Unit – IV

7. a) Differentiate between film wise and drop wise condensation. 4M b) A Circular plate of 25cm diameter with both surfaces maintained at a uniform

temperature of 100oC is suspended in a horizontal position in atmospheric air at 20oC. Determine the heat transfer from the plate.

11M

8. a) Write short notes on fouling factor. 4M b) A one-shell pass, two-tube pass exchanger is to be designed to heat 0.5kg/s of water

entering the shell side at 100C. The hot fluid oil enters the tube at 800C with a mass flow rate of 0.3kg/s and leaves the exchanger at 300C. The overall heat transfer coefficient is 250W/m2-K. Assuming the specific heat of oil to be 2kJ/kg-K, calculate the surface area of the heat exchanger required.

11M

Cont…3

:: 3 ::

Unit – V

9. a) Briefly discuss the following with respect to radiation heat transfer: i. Black surfaces ii. Diffuse surfaces iii. Grey surfaces iv. Radiosity

8M

b) Five identical thin aluminum sheets are placed between two very large parallel plates which are maintained at uniform temperatures T1=800K & T2= 450K. The net rate of radiation heat transfer between the two plates is to be determined and compared with that without the shield. Assumptions: i. Steady operating conditions exist ii. The surfaces are opaque, diffuse, and gray iii. Convection heat transfer is not considered Properties The emissivities of surfaces are given to be ε1 = ε2 = ε3=0.1 . σ=5.67 *10-8 W/m2. K4

Fig.3

7M

10. a) Briefly discuss relationships between: i. Absorptivity, α and Emissivity, ε ii. Emissive Power and Intensity

8M

b) A diffusely emitting surface is exposed to a radiant source causing the irradiation on the surface to be 1000W/m2 .The intensity for emission is 143W/m2.sr and the reflectivity of the surface is 0.8. Determine the emissive power, E(W/m2 ) and radiosity, J(W/m2) for the surface. What is the net heat flux to the surface by the radiation mode? Known: A diffusely emitting surface with an intensity due to emission of Is=143W/m2.sr

and a reflectance =0.8 is subjected to irradiation=1000W/m2. Find: i. Emissive power of the surface, E(W/m2 ) ii. Radiosity, J (W/m2 ) for the surface iii. Net heat flux to the surface Assumptions: surface emits in a diffuse manner.

7M




FINITE ELEMENT METHODS

(Mechanical Engineering)



Unit – I

1. a) Write the applications of FEM. 7M b) Distinguish between FDM and FEM.

8M

2. a) Explain the properties of shape function with an example. 5M b) For the spring shown in Fig.1, determine the nodal displacements using principle of

minimum potential energy:

Fig.1

10M

Unit – II

3. Consider the three bar truss shown in Fig.2. It is given that E= 2 x 105 MPa, determine the nodal displacement and stress in each member. Find the support reaction also:

Fig.2

15M

4. For the beam shown in Fig.3, Determine the end reaction and deflection at mid span. Take E= 200 GPa, I = 4 x 106 mm4.

Fig.3

15M

Unit – III

5. a) Derive Shape functions for 3noded triangle element. 5M b) A CST element has coordinates 1(5, 5), 2(25, 5) and 3(15, 15) and thickness unity.

E=200GPa and = 0.3 If element nodal displacement vector is given by q1=0.005, q2=0.002, q3=0.0, q4=0.0, q5=0.004 and q6=0.0mm, determine the element stress under plane strain condition.

10M

Cont…2

:: 2 ::

6. a) Explain the convergence requirements for shape function. 5M

b) Evaluate = 1

2

1

1(3 )

( 2)

xe x dxx

using two point Gauss Quadrature and compare with

analytical solution.

10M

Unit – IV

7. For the brick wall shown in Fig.4, the inner temperature is 280C and the outer surface is exposed to cold air at -150C.Determine the temperature distribution in steady state within the wall by considering 2 one dimensional heat flow elements. k=0.7 W/m0C and h=40W/m2 0C.

Fig.4

15M

8. A shaft of length 1m and having a square cross section of 50mm sides is fixed at one end and subjected to a torque of 100N-m at the free end. Consider one fourth of the cross section and using two 3 node linear triangle elements, determine: i. Element stiffness matrices and load vectors ii. Global stiffness matrix and load vector iii. Total angle of twist Take G=80Gpa.

15M

Unit – V

9. Find the natural frequencies of longitudinal vibration of the unconstrained stepped bar shown in Fig.5.

Fig.5

15M

10. Derive element mass matrices for: i. Bar element ii. Truss element iii. CST element

15M

Hall Ticket No: Question Paper Code: 1515



COMPUTER NETWORKS




Unit – I

1. a) What is a computer network? Explain about different applications of computer networks.

5M

b) i. Explain in detail about the generations of mobile phones ii. Compare and contrast OSI and TCP/IP reference models

10M

2. a) What is network hardware? Explain in detail about network hardware. 8M b) Explain OSI reference model with the help of neat diagram.

7M

Unit – II

3. a) An 8-bit binary value 10101111 is to be encoded using an even-parity Hamming code. What is the binary value after encoding?

7M

b) Illustrates the CRC calculation for a frame 1101011011 using the generator G(x) = x4+ x + 1.

8M

4. a) The following character encoding is used in a data link control: A: 01000111; B:11100011; FLAG: 01111110; ESC:11100000, Show the bit sequence transmitted (in binary) for 4 character frame: A B ESC FLAG when each of the following framing methods are used: Character count Flag bytes with byte stuffing Starting and ending flag bytes with bit stuffing

6M

b) Explain the working of a simplex protocol for a noisy channel with a suitable algorithm.

9M

Unit – III

5. a) Compute a multicast spanning tree for router C in the following subnet for a group with members at routers A, B, C, D, E, F, I, and K:

Fig.1

5M

b) i. What is routing? What are the major classes? Define Optimality Principle. ii. Consider the subnet of Fig.2 Distance vector routing is used, and the following

vectors have just come in to router C: from B: (5, 0, 8, 12, 6, 2); from D: (16, 12, 6, 0, 9, 10); and from E: (7, 6, 3, 9, 0, 4). The measured delays to B, D, and E, are 6, 3, and 5, respectively. What is C's new routing table? Give both the outgoing line to use and the expected delay.

Fig.2

10M

Cont…2

::2::

6. a) Explain token bucket algorithm.

5M

b) i. Explain the OSPF algorithm. ii. Write an explanatory note on IP

10M

Unit – IV

7. a) In detail, explain about the elements of transport protocols. 7M b) What are the performance issues in transport layer and how can we overcome them?

8M

8. a) Explain in detail about TCP with neat diagrams. 8M b) i. Explain about the real time transport protocol.

ii. A client sends a 128-byte request to a server located 100 km away over a 1-gigabit optical fiber. What is the efficiency of the line during the remote procedure call?

7M

Unit – V

9. a) What is the reason to invent DNS? Explain about DNS. 7M b) Give full explanation about FTP.

8M

10. a) Explain in detail about electronic mail. 8M b) Define World Wide Web? Explain about URLs and HTTP. 7M




ENTREPRENEURSHIP

(Common to Computer Science and Engineering, Information Technology & Electronics and Communication Engineering)



Unit – I

1. a) Entrepreneurs are always faced with issues and challenges. What are the initiatives taken by government to overcome the barriers?

8M

b) Entrepreneurship is more of a science than art. Do you agree? Discuss.

7M

2. a) “Ethics” play an important role in Entrepreneurial journey. Do agree. Justify. 8M b) Mention different barriers to entrepreneurs.

7M

Unit – II

3. a) Explain briefly about the role of government in providing institutional support to entrepreneurs in development of economy of the country.

8M

b) What is the role of Industrial development bank of India in development of entrepreneurship in the country?

7M

4. a) What is the role of MSMEs in development of entrepreneurship in the country? 8M b) What are the objectives of SIDO? Discuss the services offered by SIDO.

7M

Unit – III

5. a) Define a women entrepreneur. What role does a women entrepreneur plays in developing and growth of an economy.

7M

b) Explain the problem faced by women entrepreneurs in India.

8M

6. a) What role the government is playing in encouraging the women entrepreneurs. 7M b) Discuss the significance of Women in India’s Entrepreneurial Sector.

8M

Unit – IV

7. a) Explain social cost benefit analysis. 7M b) What are the different stages involved in project identification.

8M

8. a) Why is project report important to entrepreneurs? 8M b) Discuss the importance of project financing in project management.

7M

Unit – V

9. a) Explain the process of collection of feedback of trainees and assessment of performance of trainers.

8M

b) How does feedback help the entrepreneurs?

7M

10. a) An appropriate training programme is vital to nurturing entrepreneurs. Discuss. 8M b) Explain the different methods of designing training programs for entrepreneurs. 7M




CONTROL SYSTEMS

(Aeronautical Engineering)



Unit – I

1. a) Discuss the characteristics of Feedback System. 7M b) Write the differential equations, obtain force-voltage analogous network.

Fig.1

8M

2. a) Derive the transfer function of field controlled D.C. Servo motor. 7M

b) For the Electrical system shown below Fig.2 find the transfer function

out

in

V s

V s.

Fig.2

8M

Unit – II

3. a) Compare P, PI and PD controllers. 6M b) For the signal flow graph shown below Fig.3 using Mason’s gain formula obtain Y(s)/R(s).

Fig.3

9M

Cont…2

::2::

4. a) Explain briefly Mason’s gain formula. 6M b) Determine the transfer function Y/X of the below block diagram shown in Fig.4:

Fig.4

9M

Unit – III

5. a) Define Routh’s Stability Criterion. 5M b) Find the range of K for the system for which the systems is stable whose characteristic

equation is q(s) = S4+ 2S3+ 2S2+ S+K=0 by using R-H Criterion.

10M

6. Explain in detail steady state errors and error constants and derive necessary equations.

15M

Unit – IV

7. a) Derive an expression for resonant frequency of the second order system. 6M

b) Draw the bode plot for system having )6)(1(

)()(

sss

KsHsG find

i. Gain margin ii. Phase margin iii. Gain crossover frequency iv. Phase cross over frequency

9M

8. a) State Nyquist stability criteria and also write the condition for stability. 7M b) Sketch the nyquist plot for the open loop transfer function given bellow. Comment on

stability. )1)(21(

1)(

ssssG

8M

Unit – V

9. a) Discuss about the properties of state transition matrix.

7M

b) Given state model equation UX

X

X

X

1

1

11

01

2

1

2

1 01)0( XT

Find the time response for a unit step input.

8M

10. a) Derive the state model of armature controlled DC servo motor. 7M b) Consider the following system:

1 1

22

0.5 0 1( ).

0 2 1

X xu t

xX

and 01)( ty

2

1

x

x

Test for controllability and observability.

8M




C# AND .NET FRAMEWORK (Common to Computer Science and Engineering & Information Technology)



Unit – I

1. a) Define Namespace. Name and Explain any four namespaces of .Net framework. 6M b) Explain with a neat diagram the Building Blocks of .Net platform.

9M

2. a) Explain the steps to execute a C# program along with all the options of CSC compiler. Also explain how to compile multiple C# files.

7M

b) Write a program in C# to find the reverse of a string passed as a command line argument without using any built in functions.

8M

Unit – II

3. a) List out at least five members of System.Environment class and write a program in C# to print the values of those members.

9M

b) Explain briefly passing reference types by value.

6M

4. a) Describe narrowing and widening data type conversions with suitable examples. 9M b) Illustrate the significance of ?? operator with an example.

6M

Unit – III

5. a) Illustrate the concept of protected member with a suitable example. 9M b) What are the atoms of .NET exception handling?

6M

6. a) What is member shadowing? Illustrate with an example. 10M b) What are system level exceptions? Explain.

5M

Unit – IV

7. a) Write the syntax of declaring a delegate in C# language and also define any three members of System.Delegate.

8M

b) Differentiate between single file, multiple file and shared assemblies in C# language.

7M

8. a) Write a C# program to illustrate the use of delegates in C#. 10M b) Explain how to build a multifile assembly with an example.

5M

Unit – V

9. a) Explain data provider factory model. 10M b) Explain the role of dataset in ADO.Net.

5M

10. a) Explain the connected layer of ADO.Net. 8M b) Describe the database transactions in ADO.Net. 7M




MICROWAVE ENGINEERING (Electronics and Communication Engineering)



Unit – I

1. a) Derive the relevant equations for propagation of TE waves in a rectangular waveguide. 12M b) Calculate the resonant frequency of a rectangular resonator of dimensions a=3cm,

b=2cm and d=4cm if the operating mode is TE101. Assume free space within the cavity.

3M

2. a) What are the advantages of microwaves? Write its applications. 7M b) Determine the cut-off wavelength for the dominant mode in a rectangular waveguide of

breadth 10cm. For a 2.5GHz signal propagated in this waveguide in the dominant mode; calculate the guide wavelength, the group and the phase velocities?

8M

Unit – II

3. a) With relevant diagrams, explain the working of a gyrator constructed based on the principle of Faraday rotation.

7M

b) Derive the scattering matrix of a directional coupler.

8M

4. a) Explain the operation of an E–plane tee and derive its S–parameters. 8M b) What is the application of a microwave attenuator? With neat diagrams, briefly explain

the different kinds of attenuators.

7M

Unit – III

5. a) Explain how amplification takes place in travelling wave tube. Why the gain and bandwidth are high compared to multi cavity klystron?

8M

b) A reflex klystron is operated at 9GHz with a dc beam voltage of 600V for mode 1, repeller space length of 1mm and dc beam current of 10mA. The beam-coupling co-efficient is assumed to be 1. Calculate the repeller voltage, electronic efficiency and output power.

7M

6. a) What is velocity modulation? Explain how velocity modulation principle is utilized in klystron amplifier. Compare this with travelling wave tube amplifier.

9M

b) A travelling – wave tube operates under the following parameters: Beam Voltage: Vo = 3Kv. Beam Current: Io = 30 mA. Characteristic impedance of helix: Zo = 10Ω. Circuit length N = 50. Determine the gain parameter C, and the output power gain Ap in decibels.

6M

Unit – IV

7. a) What are Avalanche transit time devices? With respect to doping level, explain the types of IMPATT Diodes and dc operating principle.

7M

b) What is Transferred electron effect? With the help of two valley model along with the emphasis of drift velocity, explain the negative resistance property of a Gunn diode.

8M

8. a) Explain the principle of working of M-type oscillator and the mechanism of oscillation in π-mode.

9M

b) Magnetron has the following parameters: inner radius=0.15m, outer radius=0.45m, magnetic flux density=1.2mWb/m2, determine the Hull cut-off voltage, cyclotron frequency and the Hull magnetic flux density if the beam voltage is 6000V.

6M

Cont…2

:: 2 ::

Unit – V

9. a) Explain how to measure the frequency of the microwave source using slotted line carriage.

8M

b) Describe the method of measurement of power at microwave frequency.

7M

10. a) Define VSWR. Explain a method to measure the same for low and high values of VSWR. 8M b) Give the description of a microwave bench with the help of block diagram. 7M




OPERATIONS RESEARCH (Aeronautical Engineering)



Unit – I

1. a) A company produces two types of leather belts, type A and type B. Profits on these two type of belts are Rs.4 and Rs.3 for belt respectively. Each belt of type A requires twice as much time as required by a belt of type B. If all belts were of type B, the company produces 1000 belts/day. The supply of leather is sufficient only for 800 belts/day. Belt A requires a fancy buckle and only 400 buckles are available per day. In case of belt B only 700 buckles are available per day. How should the company manufacture the two types of belt in order to maximize profit. Solve graphically.

6M

b) Solve following LP model by Simplex Method.

Minimize 1 2 3 3 2Z x x x

S.T. 1 2 33 2 7x x x

1 2 2 4 12x x

1 2 34 3 8 10x x x

1 2 3, , 0x x x

9M

2. Solve the following LPP using Big M method.

Minimize, 1 2 4 Z x x

Subject to, 1 23 3x x

1 24 3 6x x

1 22 4x x

1 2, 0x x

15M

Unit – II

3. ABC limited has three production shops that supply a product to five warehouses. The costs of transportation is given in the following table:

To From

1 2 3 4 5 Supply

A 6 4 4 7 5 100

B 5 6 7 4 8 125

C 3 4 6 3 4 175

Demand

60

80

85

105

70

400 400

The cost of manufacturing the product at different production shop is given in the following table.

Shop Variable cost in Rs. Fixed cost in Rs.

A 14 7000

B 16 4000

C 15 5000

Find the optimum quantity to be shipped from each shop to different warehouse at the minimum total cost.

15M

Cont…2

::2::

4. a) What is Degeneracy in Transportation problem? How to resolve it? 3M b) A marketing manager has five salesmen and five sales districts. Considering the

capabilities of salesmen and nature of districts, the marketing manager estimates sales per month (in hundreds of rupees) for each salesman in each district and are given in the following table. Find the assignment of salesmen to districts that will result in maximum sales:

Districts

Salesmen

A B C D E

1 32 38 40 28 40

2 40 24 28 21 36

3 41 27 33 30 37

4 22 38 41 36 36

5 29 33 40 35 39

12M

Unit – III

5. a) Workers come to a tool store to receive special tools. The average time between two arrivals is 60 seconds and the arrivals are assumed to be in poisson distribution. The average service time is 40 seconds. Determine: i. Average number of customers in the system ii. Average number of customers in the queue or average queue length iii. Average time a customer spends in the system iv. Average time a customer waits before being served v. Traffic intensity

10M

b) A commercial bank has 3 cash paying assistants. Customers are found to arrive at an average rate of 6/hr. The service time is found to have an exponential distribution with mean time of 18 minutes. Determine: i. Average number of customers in the system ii. Average time a customer spends in the system iii. Average number of hours per week spent on the job

5M

6. a) There are 4 jobs A,B,C and D, each of which has to go through the machines in the order M1, M2,……, M6. Processing time are given as:

Determine a sequence for these four jobs which minimizes the total Elapsed time T.

M1 M2 M3 M4 M5 M6

A 20 10 9 4 12 27

B 19 8 11 8 10 21

C 13 7 10 7 9 17

D 22 6 5 6 10 14

8M

b) Find the sequence that minimizes the total elapsed time to complete the following tasks on two machines:

Task A B C D E F G H I

Machine A 2 5 4 9 6 8 7 5 4

Machine B 6 8 7 4 3 9 3 8 11

7M

Cont…3

::3::

Unit – IV

7. a) An auto owner finds from his past records that the cost per year of an auto whose purchase price is Rs.60000 are:

year 1 2 3 4 5 6 7 8

running price(in Rs.)

10000 12000 14000 18000 23000 28000 34000 40000

resale price(in Rs.)

30000 15000 7500 3750 2000 2000 2000 2000

Determine at what age is its replacement due.

8M

b) It has been suggested by a data processing firm that a company adopt the policy of periodically replacing all the tubes in a certain piece of equipment. A given type of tube is known to have mortality distribution as shown below: The cost of replacing the tubes on an individual basis is estimated to be Re.1 per tube and the cost of group replacement policy average Rs.0.30 Per tube. Compare the cost of preventive replacement with that of Remedial replacement.

tube failures per week 1 2 3 4 5

probability of failure 0.3 0.1 0.1 0.2 0.3

7M

8. a) A chemical company is considering the optimal batch size for reorder of sulphur. The management accountant has supplied the following information: The purchase price of sulphur is Rs.150 per kg. The clerical and data processing costs are Rs.500 per order. All the transport is done by rail. A charge of Rs.2000 is made each time, the special line to the factory is opened. A charge of Rs.20 per kg is also made. The company uses 40000 kg per year. Maintenance costs of stock are Rs.400 per kg per year. Each kg requires 0.5 square feet of storage space. If ware house space is not used, it can be rented out to another company at Rs.200 per sq.ft per annum. Available warehouse space is 1000 sq.ft, The overhead costs being Rs.5000 per annum. Assume that all free warehouse space can be rented out calculate the economic reorder size calculate the minimum total annual cost of holding and reordering stock.

8M

b) The demand for a certain item is 16 units per period. Unsatisfied demand causes a shortage cost of Re.0.75 per unit per short period. The cost of initiating purchasing action is Re.1 per purchase and the Holding cost is 15% of average inventory valuation per period. Item Cost is Rs.8 per unit. Find the minimum cost of purchase quantity.

7M

Unit – V

9. Solve the following game:

Player B

Player A

I II III IV

I 19 6 7 5

II 7 3 14 6

III 12 8 18 4

IV 8 7 13 -1

15M

10. a) Reduce the game by dominance and find the value of the game:

Player B

Player A

I II III IV

I 3 2 4 0

II 3 4 2 4

III 4 2 4 0

IV 0 4 0 8

7M

b) List the characteristics of Dynamic programming. 8M




FATIGUE AND FRACTURE MECHANICS (Mechanical Engineering)



Unit – I

1. a) Write a note on: i. Stress amplitude ii. Fatigue stress concentration factor and iii. Factors affecting fatigue strength of materials

9M

b) With a neat sketch explain the local strain model to account for notch effect.

6M

2. a) Explain various methods of reducing stress concentration among various sizes and shape of different members.

8M

b) Determine the diameter of a circular rod made of ductile materials with a fatigue strength (Complete stress reversed), Endurance limit 0f 265 MPa and a Tensile yield strength of 350 MPa. The member is subjected to a varying axial load from WMin= -300x103N to WMax=700x103N and has a stress concentration factor =1.8, Use factor of safety as 2.0.

7M

Unit – II

3. a) Explain the concept of Cyclic strain life equation as per Coffin Mansion’s approach. 7M b) With a neat sketch distinguish between Low cycle fatigue and high cycle fatigue.

8M

4. a) Explain cycle counting Techniques with reference to load aspects in Fatigue behavior. 8M b) Explain Fatigue behavior subjected to variable amplitude load.

7M

Unit – III

5. a) Explain Time-Dependent crack growth and damage tolerance. 8M b) Explain the various conditions for crack to grow and under what condition crack growth

become critical.

7M

6. a) Explain with sketch Brittle Fracture and Ductile Fracture with sketches of stages of failure. 8M b) Explain Griffith‘s analysis and obtain the equation for released energy(G/ER).

7M

Unit – IV

7. Explain Analytical and Numerical methods for evaluating Stress- Intensity factors.

15M

8. Give the Stress intensity factors for: i. Edge crack in an infinite plate ii. Edge crack in a finite plate iii. Center crack in a finite plate

15M

Unit – V

9. Explain in details the application of composite materials in Automobile and Aerospace sector with reference to fracture mechanics.

15M

10. a) Explain experimental determination of Interlaminar toughness of a composite laminate. 7M b) Explain Safe -life and Fail-Safe design and Importance of fracture mechanics in

Aerospace structure. 8M



B. Tech VI Semester Supplementary Examinations, May - 2018 (Regulations: VCE-R14)

COMPUTER METHODS IN POWER SYSTEMS (Electrical and Electronics Engineering)



Unit – I

1. a) Obtain the general expressions for Zbus building algorithm when a branch (from new

bus to old bus and from new bus to reference bus) is added to the partial network.

10M

b) Form YBUS by inspection method for the network shown in Fig.1. All the values specified are impedances in pu.

Fig.1

5M

2. a) List out the advantages of per unit value. Explain How you will change the base impedance from one set of base values to another set.

5M

b) Draw Reactance diagram for the power system shown in Fig.2 below. Choose MVAB=750MVA, KVB=18KV on G1 section.

Fig.2

Generator 1: 750MVA, 18KV, X=0.2pu; Generator 2: 750 MVA, 18 kV, X = 0.2 pu Motor: 1500 MVA, 20 kV, X = 0.2 pu Transformer T1, T2, T3, T4: 750 MVA, 500 kV/20 kV, X = 0.1 per unit Transformer T5: 1500 MVA, 500 kV /20 kV, X = 0.10 per unit

10M

Unit – II

3. For the power system network shown, bus 1 is the slack bus of voltage 1.00p.u. The line impedances are indicated in the network on 100MVA base. Neglect shunt admittances. By using G-S method at the end of first iteration, determine the magnitude of voltage and phase angle.

Fig.3

15M

Cont…2

:: 2 ::

4. a) Define acceleration factor. How do you select the value and explain the significance of

the same. 5M

b) For the three bus system. Write the expression for the bus voltages using GS method.

Fig.4

10M

Unit – III

5. a) Explain Newton – Raphson method in polar coordinates. 8M b) Distinguish among all the iterative procedure.

7M

6. a) Explain the step by step procedure of fast decoupled load flow method. 8M b) Compare between Decoupled and Fast decoupled load flow methods.

7M

Unit – IV

7. a) Prove that only positive sequence voltages exist in a balanced 3 phase system. 5M b) Discuss about Double line to ground fault in a power system. Derive equation for the

fault current.

10M

8. a) Differentiate between steady state stability, dynamic stability and transient stability. 6M b) Explain the following:

i. Transfer reactance ii. Inertia constant iii. Synchronizing power coefficient

9M

Unit – V

9. a) Briefly explain different methods to improve transient stability. 5M b) The transfer reactances between a generator and an infinite bus bar operating at 200 KV

under various condition on interconnection are:

Prefault: 150 per phase

During fault: 400 per phase

Post fault: 200 per phase If the fault is cleared when the rotor advanced 600 electrical from the prefault position, determine the maximum load that could be transferred without loss of stability.

10M

10. a) Derive the swing equation. 7M b) Explain the transient stability by equal area criterion. 8M




ANALOG COMMUNICATIONS




Unit – I

1. a) Explain the detection of AM wave using envelop detector with a neat circuit diagram and relevant waveforms.

7M

b) Determine the percentage power saving when the carrier wave and one of the sidebands are suppressed in an AM wave modulated to a depth of: i. 100% ii. 50%

8M

2. a) Explain the demodulation of DSBSC signal using Coasts receiver. 7M b) A 75 MHz carrier signal having amplitude of 50V is AM modulated by a 3kHz audio signal

having an amplitude of 20V(Ka=0.3): i. Sketch the audio and carrier signal ii. Determine the modulation index. Write the equation for the carrier and the AM

modulated wave

8M

Unit – II

3. a) Describe frequency discrimination method of SSB generation with a neat block diagram. 7M b) Explain the effects of frequency and phase errors in synchronous detection of DSB-SC.

8M

4. a) Explain the Generation of VSB Modulated wave with neat block diagram. 8M b) Compare various Amplitude Modulation Techniques with spectrums.

7M

Unit – III

5. a) Explain with relevant mathematical equations and block diagram the generation of WBFM using Armstrong’s method.

7M

b) In a block diagram of an indirect FM transmitter (two stage), compute maximum frequency deviation of the output and carrier frequency fc if f1 = 200kHz, fLO = 10.8MHz,

f1 = 25Hz, n1 = 64 and n2 = 48.

8M

6. a) With suitable analysis show that an FM system has infinite bandwidth. 7M b) Explain with relevant mathematical equation and block diagram how a Phase Locked Loop

can be used in the demodulation of frequency modulated wave.

8M

Unit – IV

7. a) Explain the Types of pulse modulation with wave forms. 7M b) Derive an expression for narrowband noise and also mention its properties.

8M

8. a) Explain the generation and de-modulation of pulse position modulation with waveforms. 7M b) What is Pre-emphasis and De-emphasis? How is it useful in FM system?

8M

Unit – V

9. a) Explain the effect of feedback on performance of AM transmitter. 8M b) Explain about variable reactance type of FM transmitter.

7M

10. a) Draw the block diagram of a super heterodyne receiver and explain the function of each block.

8M

b) Distinguish between simple AGC and delayed AGC. 7M




VLSI DESIGN (Electrical and Electronics Engineering)



Unit – I

1. a) With a neat sketch, Explain the working of Nmos Enhancement Transistor. 7M b) Derive the expression for drain current of NMOS Transistor in linear region and saturation

region starting from fundamentals.

8M

2. a) Define threshold voltage and discuss how VT depends on various parameters. 7M b) Draw and explain the operation of BiCMOS inverter.

8M

Unit – II

3. a) With a neat diagram, Explain the Czochralski method for manufacturing silicon ingots. 10M b) Explain the problem of Latch up in CMOS Circuits.

5M

4. Explain: i. Latch up Prevention ii. Silicon on insulator iii. Deposition iv. Oxidation

15M

Unit – III

5. a) Explain the significance of stick diagrams and mention different approaches that describe the design rules.

8M

b) Draw the stick diagram and layout for 2-input CMOS NAND gate.

7M

6. a) Evaluate an expression for rise time and fall time for CMOS inverter. 7M b) Explain SPICE model of MOS capacitance with an example.

8M

Unit – IV

7. a) With a neat circuit diagram, Explain the operation of three input dynamic NAND gate and also draw the layout.

10M

b) Explain the operation of CMOS domino logic?

5M

8. a) With a neat circuit diagram, explain the operation of Pseudo NMOS 2 input NOR and 2 input NAND gates.

10M

b) Implement 2-input XNOR gate in pass transistor logic and explain its operation?

5M

Unit – V

9. a) Explain short circuit and open circuit faults with an example. 8M b) Discuss the concept of controllability and observability.

7M

10. a) Explain how pseudo random sequence generator is used to generate the input signals for combinational circuits.

8M

b) Illustrate how Stuck-At-0, Stuck-At-1 fault occurs and Explain it with an example. 7M




DIGITAL ELECTRONICS AND MICROPROCESSORS (Mechanical Engineering)



Unit – I

1. a) Convert the following numbers from the given base to the other bases indicated: i. Decimal 225 to binary, octal and hexadecimal ii. Binary 11010111 to decimal, octal and hexadecimal iii. Octal 623 to decimal, binary and hexadecimal iv. Hexadecimal 2AC5 to decimal, octal and binary

8M

b) Define canonical form? Translate the following expressions into canonical form: i. F(a,b,c,d)=a’bc+a’c+bcd ii. F(x,y,z)=(x’+y’)(y+z’)

7M

2. a) Reduce the following Boolean expressions to the indicated number of literals: i. A’C’+ABC+AC’ to three literals ii. (x’y’ +z)’ +z+xy+wz to three literals

8M

b) Express the Boolean function F=A+B’C as a sum of mintems and show the truth table.

7M

Unit – II

3. a) Simplify the following Boolean function by using Quine – McCluskey method. F(A,B,C,D) = ∑m(0,2,3,6,7,8,10,12,13)

8M

b) Reduce the following function using Karnaugh map technique and implement using basic

gates. F(A, B, C, D) = 𝐴𝐵 D + AB 𝐶 𝐷 + 𝐴 BD + ABC 𝐷 .

7M

4. a) Implement Full Adder using two Half Adders. 7M b) Design Excess-3 to BCD code converter and draw the logic diagram.

8M

Unit – III

5. a) State and Derive the characteristic equations for TFF and JKFF. 7M b) Design a MOD-5 Synchronous counter using clocked D-FF for the sequence 0, 4, 1, 2, 6,

0, 4,….

8M

6. a) Define latch. Explain how SR latch acts as a switch with characteristics table. 7M b) Design a Mod-6 Synchronous counter using clocked T flip-flops for the sequence

0,2,3,6,5,1,0,2,3,….

8M

Unit – IV

7. a) Describe the Addressing Modes of 8085 microprocessor with suitable instructions 8M b) Draw the timing diagram for the instruction MOV Reg,M.

7M

8. a) Explain the register organization of 8085 microprocessor. 8M b) Explain TRAP, RST 7.5, RST 6.5, RST 5.5 and IWTR.

7M

Unit – V

9. a) Explain the operation of the 8255A Programmable Peripheral Interface with a neat figure of it block diagram, control logic and I/O ports.

8M

b) What is DMA? Examine the various channels and signals of 8237 controller with a neat figure of 8237A DMA controller with Internal registers.

7M

10. a) Illustrate the operation of IN instruction used for I/O execution in 8085 microprocessor showing the timing diagram for the execution of IN instruction.

8M

b) Illustrate the 8255 mode 0 operation to interface the 8255 I/O ports with Dip switches and write a program to read the dip switches and display reading from port B at port A and from port CL at port CU.

7M




DATA MINING AND DATA WAREHOUSING

(Information Technology)



Unit – I

1. a) Define attribute and discuss the types of an attribute which is determined by the set of possible values by proving suitable examples.

7M

b) Discuss issues to consider during data integration.

8M

2. a) Discuss the Data Transformation Strategies used to transform or consolidate data into forms appropriate for mining.

7M

b) What is Data Mining? Describe the steps involved in data mining when viewed as a process of knowledge discovery.

8M

Unit – II

3. a) Briefly compare the following concepts. You may use an example to explain your point(s): i. Data cleaning, data transformation, refresh ii. Enterprise warehouse, data mart, virtual warehouse

8M

b) Write the star schema for IPL cricket taking into account the spectator, location, game, date for the centralized sales table. Starting with the base cuboid [date, spectator, location, game] what specific OLAP operations should one perform in order to get the total charges paid by spectators of Black Dog Pavilion at Chinnaswamy Stadium in 2018?

7M

4. a) What are the optimization techniques for the efficient computation of data cubes? Explain any one.

6M

b) Suppose that a base cuboid has three dimensions A; B; C, with the following number of cells: |A| = 1000000, |B| = 100, and |C| = 1000. Suppose that each dimension is evenly partitioned into 10 portions for chunking: i. Assuming each dimension has only one level, draw the complete lattice of the cube ii. If each cube cell stores one measure with 4 bytes, what is the total size of the

computed cube if the cube is dense iii. State the order for computing the chunks in the cube that requires the least amount

of space, and compute the total amount of main memory space required for computing the 2-D planes

9M

Unit – III

5. a) A database of transactions in a book mart is as follows: Let min-sup = 25%:

Trans_ID Items

101 Book, Pen, Eraser

102 Pen, Pencil

103 Notebook, Book, Pen, Eraser

104 Book, Pen

105 Book, Notebook, Eraser

Using the abbreviations B for Book, P for Pen, E for Eraser, PN for Pencil and N for Notebook, find all frequent itemsets using Apriori algorithm. Construct FP Tree, conditional pattern base and conditional FP Tree.

9M

b) A database has six transactions of purchase of books from a bookshop as given: t1 = ANN, CC, TC,CG , t2 = CC, D ,CG t3 = ANN, D, CC, TC, t4 = ANN, CC, D,CG , t5 = ANN, CC, D, TC,CG, t6 = CC, D ,TC Let X= CC, TC and Y= ANN,TC,CC Find the confidence and support of the association rule X -> Y and inverse rule Y-> X.

6M

Cont…2

::2::

6. a) What is Market Basket Analysis? Explain by means of an example. 5M b) A database has five transactions. Let min_sup = 60 % and min_conf= 80%:

TID Items bought

T100 M O, N,K,E,Y

T200 D ,O,N,K,E,Y

T300 M ,A,K,E

T400 M, U,C,K,Y

T500 C ,O,O,K,I,E

Find all frequent itemsets (individual alphabets) using Apriori and FP growth, respectively. Compare the efficiency of the two mining processes.

10M

Unit – IV

7. a) What is Classification and Prediction? Mention the criteria for comparing the Classification and prediction methods.

5M

b) List the factors which are contributing toward the usefulness of neural networks for classification and prediction in data mining. Discuss the working of back propagation.

10M

8. a) Explain the steps involved in decision tree classification with a suitable example. 10M b) Explain how lazy learners are useful in classification. Also list their limitations.

5M

Unit – V

9. a) How might you determine outliers in the data? 5M b) Both k-means and k-medoids algorithms can perform effective clustering. Illustrate the

strength and weakness of k-means in comparison with the k-medoids algorithm. Also, illustrate the strength and weakness of these schemes in comparison with a hierarchical clustering scheme.

10M

10. a) Describe each of the following clustering algorithms in terms of the following criteria: Shapes of clusters that can be determined Input parameters that must be specified Limitations i. K-means ii. K-medoids iii. CLARA

6M

b) We have 8 points namely P1(2, 2), P2(1, 14), P3(10, 7), P4(1, 11), P5(3, 4), P6(11, 8), P7(4, 3), P8(12, 9) forming 3 clusters. To start with you may take P1, P2, and P7 as initial centroids. Then apply K-Means clustering algorithm to calculate: i. The centroid after one iteration ii. The centroid after two iterations(the distance computation may be either Euclidean

or Manhattan)

9M




NETWORK SECURITY AND CRYPTOGRAPHY




Unit – I

1. a) Account on the following: i. Different techniques used in steganography ii. Essential ingredients of symmetric cipher

10M

b) Analyze the various types of cryptanalytic attacks based on the amount of information known to the cryptanalyst.

5M

2. a) Consider an automated teller machine (ATM) in which users provide a personal identification number (PIN) and a card for account access. Give examples of confidentiality, integrity and availability requirements associated with the system.

6M

b) Show your calculations and the result to encrypt the message “SHORT EXAMPLE” using the Hill Cipher with the key

7 8

11 11

[Note: Alphabet A should start at 0].

9M

Unit – II

3. a) What is triple encryption? 5M b) Explain AES structure with a neat diagram.

10M

4. a) With neat diagram explain Single Round of DES algorithm. 9M b) With diagram explain Cipher Feedback Mode.

6M

Unit – III

5. a) Explain Diffie-Hellman key Exchange with an example. 8M b) Explain the working of HMAC algorithm with neat diagram.

7M

6. a) Explain Message Authentication Code for authentication tied to plaintext and authentication tied to ciphertext with a neat diagram.

8M

b) In a public-key system using RSA, you intercept the ciphertext C=10 sent to a user whose public key is e=5, n=35. What is the plaintext M? Write the corresponding pseudocode.

7M

Unit – IV

7. a) List the various requirements of Digital Signatures. 5M b) Explain in detail about Kerberos Version 5.

10M

8. a) Discuss briefly about the X.509 certificate format. 8M b) What are the different management functions identified by public key infrastructure

X.509 (PKIX). 7M

Unit – V

9. a) With the help of the timing diagram explain the various messages exchanged between client and server in handshake protocol.

9M

b) What is the difference between an SSL connection and an SSL session?

6M

10. a) Explain in brief the IPSec Architecture. 6M b) Explain how S/MIME provides Email Security. 9M




GEO TECHNICAL ENGINEERING-II (Civil Engineering)



Unit – I

1. a) What are the objectives of soil exploration? Explain. 7M b) With the sketch of the soil sampler, Define:

i. Area ratio ii. Outside clearance iii. Inside clearance

8M

2. a) Explain various methods of borings adopted for soil exploration. 7M b) Explain standard penetration test with the help of neat sketch.

8M

Unit – II

3. a) Explain the Method of Slices of determining the factor of safety of finite slopes. 8M b) A slope 1 in 2 with a height of 8m has the following soil properties: γ=18 KN/m3,

C=28KN/m2 and Φ=100. Calculate: i. factor of safety with respect to cohesion ii. Critical height of slope

7M

4. a) A finite slope has failed in your city. What may be the possible causes? Explain any two of them briefly.

5M

b) An embankment has a slope of 1.5H : 1V with a height of 9m and the soil properties are C=25kPa, Φ=200 and γ=18kN/m3. Determine the factor of safety for a trial slip circle passing through the toe using the method of slices. The Fellinius angles are α=260 and β=350. Use method of slices.

10M

Unit – III

5. a) Derive the equations of active and passive earth pressures. 5M b) Discuss Culmann's method for the determination of active earth pressure.

10M

6. a) Briefly explain any two types of retaining walls. 5M b) Calculate the total lateral thrust and its location on the retaining wall of height 6 m high

using the data given below: For top 2.5m soil: Φ=360 and γ=18 kN/m3 For bottom 3.5m soil: Φ=320 and γ=17 kN/m3

Plot the variation of active earth pressure and locate the point of action of total active thrust.

10M

R

Unit – IV

7. a) What are different types of shallow foundations? Explain with neat sketches 8M b) Compute the Safe bearing capacity of a continuous footing of 1.5m wide at a depth of

1.5m in a soil with γ=18 KN/m3, C=18KN/m2 and Φ=250. What is the safe load per metre run if factor of safety is 3. Take the values of Terzaghi's bearing capacity factors as Nc=25, Nq=12.5 and Nγ=10.

7M

8. a) Differentiate between general shear failure and local shear failure. 7M b) Discuss the effect of water table on the bearing capacity of soil.

8M

Cont…2

:: 2 ::

Unit – V

9. a) In what circumstances do you recommend the deep foundations for a structure? List the different types of piles based on the load transfer mechanism.

5M

b) There are 9 piles of 400mm diameter and 10m length driven into a sandy soil at 1m centre-to-centre in a 3x3 arrangement. If the soil has c=0, Φ=200, K=1.5 and γ=15.45kN/m3, calculate the load carrying capacity of the pile group using Factor of safety=2. Take Nq=10 and Nγ=5.39.

10M

10. a) What are the functions of well foundations? Explain the different components of a Well foundation with a neat sketch.

8M

b) Briefly explain the different types and shapes of well foundations. 7M




EMBEDDED SYSTEMS




Unit – I

1. a) Explain characteristics of Embedded computing applications and also discuss why microprocessors are efficient to design the digital systems.

7M

b) Explain architecture design process in designing hardware and software components of embedded system taking the example of GPS Moving Map.

8M

2. a) Explain embedded design process in detail. 7M b) Draw the architecture of a digital still camera and explain the process of capturing image

with the help of sequence diagram.

8M

Unit – II

3. a) With a neat diagram explain task states and task switching in RTOS. 7M b) Define semaphore. Explain any three methods of protecting shared data.

8M

4. a) Explain reentrant function with an example. 7M b) With concept explain the following:

i. Message queues ii. Mailboxes iii. Pipes iv. Events

8M

Unit – III

5. a) Explain the concept of Cross Compiler and Cross assembler in Embedded System. 8M b) Elaborate with in block diagram the debugging tool software only monitors.

7M

6. a) Explain how the embedded system is loaded into a target system. 7M b) Illustrate the use of segments in a tool chain.

8M

Unit – IV

7. a) With a neat block diagram explain I2C bus. 8M b) With a neat timing diagram explain instruction level parallelism.

7M

8. a) Explain CAN bus and its functions. 8M b) Write an example case study on Internet Security issues in Internet enabled embedded

system. 7M

Unit – V

9. a) With a neat sketch, explain the hardware architecture of audio player. 7M b) Explain the need of CPU - Accelerators in multiprocessor with neat figures and examples.

8M

10. a) Describe the cell phone architecture in detail with diagrams. 8M b) i. Define a Multiprocessor. Give examples.

ii. Explain the need for Multiprocessor in this modern era. 7M




ARTIFICIAL INTELLIGENCE

(Computer Science and Engineering)



Unit – I

1. a) Is AI a science, or is it engineering? Or neither or both? Explain. 5M b) Describe the structure of four basic kinds of agents with internal state diagram.

10M

2. a) Give the principal distinctions among different flavors of environment. 9M b) Write the basic environment simulator program, each agent should give its percept, gets

an action from each agent, and then updates the environment.

6M

Unit – II

3. a) Specify agent's task, percepts, actions, and goals in the wumpus world. 10M b) Write the forward-chaining inference algorithm.

5M

4. a) Briefly discuss three new inference rules in First-Order Logic. 7M b) Explain different resolution strategies that have been used to guide the search toward a

proof.

8M

Unit – III

5. a) Explain about the breadth-first search algorithm. 8M b) Explain A* algorithm with an example.

7M

6. a) Differentiate between uniformed and heuristic search techniques. 8M b) Write the algorithm for steepest ascent hill climbing.

7M

Unit – IV

7. a) Write the MIN-CONFLICTS algorithm for solving CSPs by local search and discuss its application to an 8-queens problem.

10M

b) List the elements of a game which is defined as a search problem.

5M

8. a) Write a brief note on constraint weighting during local search Constraint Satisfaction Problem.

5M

b) Explain about the alpha-beta pruning.

10M

Unit – V

9. a) Define Classical Planning problem. Write and explain a PDDL description of an air cargo transportation planning problem.

7M

b) With an example, explain Forward state space search approach to search for a plan.

8M

10. a) Explain the “have cake and eat cake too” planning problem. Draw its planning graph. 7M b) Differentiate between:

i. Inductive and Deductive learning ii. Supervised and Unsupervised learning

8M




DESIGN OF STEEL STRUCTURES (Civil Engineering)



Unit – I

1. a) Define the following: i. Prying action ii. HSFG bolts

5M

b) Design a welded connection for a single angle ISA 90x90x8 connected to the gusset plate if the tensile force is 120kN.

10M

2. a) Define block shear and how the block shear strength is estimated. 5M b) Design a single angle section for a tension member of a roof truss to carry a tensile force

of 225kN. The member is subjected to possible reversal of stress due to the action of wind. The length of the member is 3m, use grade 4.6.

10M

Unit – II

3. A compound column of 2ISMC 250 kept toe to toe. Find the maximum load carried by the column for an effective height of 6.2m. What is the optimum distance between toes for this load? Design a welded lacing system for this compound column.

15M

4. Design the base plate for an ISHB 350 column to carry a factored load of 1200kN. Assume Fe410 grade steel and M25 concrete, Use the effective area method of design, sketch the details.

15M

Unit – III

5. Design a simply supported beam using suitable ISMB section for an effective span of 6m subjected to a factored UDL of 25kN/m. assume it is laterally supported throughout apply necessary checks.

15M

6. Design a laterally supported beam of span 5m subjected to a factored load of 300kN acting at midspan, the bearing plate is 150mm the available section is ISMB400.

15M

Unit – IV

7. Design the allowable load for the bracket connection shown in Fig.1 assuming 12nos of M20 bolts of grade 5.6 provided centrically with respect to the joint. Assume fu=410MPa for rolled steel sections:

Fig.1

15M

8. Calculate the factored load that can be supported by the bracket connection shown in the Fig.2.Weld size = 6mm.

Fig.2

15M

Cont…2

:: 2 ::

Unit – V

9. Design a welded plate girder of span 24m to carry on super imposed load of 35kN/m. Avoid use of bearing and intermediate stiffeners use Fe 415 steel.

15M

10. Design an end bearing stiffener and its connections the flange plate is 500x40mm; web plate 1800x10mm, maximum shear force is 2600kN.

15M




CONTROL SYSTEMS




Unit – I

1. a) Mention any three advantages and three disadvantages of open loop control system. 8M b) Apply the knowledge of control systems and obtain the electrical analogous circuit using

equivalent mechanical system using F-V analogy for the mechanical network shown in Fig.1.

Fig.1

7M

2. a) Draw the neat diagram of Gear train and derive the equations relating inertia and friction coefficients.

6M

b) For the electrical network shown in Fig2, write the equilibrium equations and find the analogous mechanical system using F-I analogy

Fig.2

9M

Unit – II

3.

a) Consider the block diagram shown below. Find

C s

R s using block diagram reduction

technique.

Fig.3

6M

Cont…2

:: 2 ::

b) Using signal flow graph approach, obtain

2

1

V s

V s for the network given shown in Fig.4

below.

Fig.4

9M

4. a) Find C/R for the graph shown below using mason gain formula.

Fig.5

8M

b) Obtain the overall transfer function of an AC servomotor.

7M

Unit – III

5. a) Derive the unit step response of a second order under damped system. 8M b) A system is given by differential equation d2y/dt2 +4dy/dt + 8y = 8x, where x is input and y

is output. Determine all time domain specifications for unit step input.

7M

6. a) Find the number of roots of the characteristic equation S6 + 4S5 + 3S4 -16S2 -64S -48 = 0 will be with positive real part, zero real part and negative real part.

8M

b) For the system S4 +22S3 + 10S2 +S + K = 0, Find the critical Value of K for which the system

is stable. Find the at K critical.

7M

Unit – IV

7. a) Derive an expression for resonant frequency of the second order system. 6M b) Draw the log-magnitude plot and phase plot for a system with open-loop transfer

function

2

12650

10 20G s H s

S S

and obtain the gain margin and phase margin of the

system.

9M

8. a) What is gain margin and phase margin? How stability analysis can be done using Bode plots?

7M

b) Sketch the nyquist plot for the open loop transfer function given below. Comment of

stability

.1 0.2 1 0.05

G sK

s s s

8M

Cont…3

:: 3 ::

Unit – V

9. a) Obtain the time response of the following system

1 1

2 2

0 1 0.

2 3 1

x xu

x x

Where dx

A x t B U tdt

U(t) is the unit step function occur a t = 0

9M

b) A system is given by

2

1

3 2

Y s s

U s s s

i. Controllable canonical form ii. Observable form iii. Diagonal canonical form

6M

10. a) Explain the properties of State transition matrix. 6M b) Write the procedural steps required to design a lead compensator using root locus

method. 9M




VLSI DESIGN (Electrical and Electronics Engineering)



Unit – I

1. a) Explain body effect and sub-threshold current in long channel MOSFET. 9M b) With necessary diagram explain the MIS structure and its energy bands when it is

unbiased.

6M

2. a) Derive an expression for dynamic power dissipation in CMOS Circuits, taking in to account the charging and discharging of capacitance in CMOS circuits.

6M

b) Briefly explain the basic principles of low power VLSI design?

9M

Unit – II

3. a) Write the two sources of uncertainty that affects the delays of the circuit. 6M b) Explain the power sensitivity technique to obtain bound average power with flowchart.

9M

4. a) Describe the technique of estimating average power in sequential circuits. 8M b) Express P(X2TXTX0), P(X2TX’TX0) & P(X2TX0)in terms of its probabilities P(PX) and normalized

activities a(aX).

7M

Unit – III

5. a) Explain the first order difference algorithm level transforms for low power in behavioral transformation.

7M

b) With an example, briefly explain the power optimization using operation substitution.

8M

6. a) Briefly explain the power efficient pre-computation logic using shannon’s expansion. 8M b) Explain the circuit activity driven architectural transformations with diagrams.

7M

Unit – IV

7. a) With a circuit diagram, explain the pre-charge low differential current switch logic operation.

7M

b) Explain the following: i. Reverse-Bias PN junction leakage current ii. Weak Inversion

8M

8. a) With an example, explain the following logic families and discuss about power and performance of these logic families: i. NMOS Logic ii. DCVS Logic

8M

b) Explain the following logic families with examples: i. Pass-transistor logic ii. Domino Logic Comment about power and performance of each logic families.

7M

Unit – V

9. a) With a circuit diagram explain the operation of 2 input adiabatic NAND Switch. 7M b) Explain the operations of Adiabatic SRAM Core.

8M

10. a) Briefly explain the operation of adiabatic dynamic logic CMOS inverter with a circuit diagram.

7M

b) Explain the following software power estimation: i. Architecture level power estimation ii. Bus switching Activity

8M




OBJECT ORIENTED ANALYSIS AND DESIGN (Common to Computer Science and Engineering & Information Technology)



Unit – I

1. a) Briefly explain the building blocks of UML. 7M b) Explain the common mechanisms in UML.

8M

2. a) Briefly explain the Software Development Life Cycle. 9M b) Explain the responsibilities of a class with an example.

6M

Unit – II

3. a) State and explain three common relationships among classes. 6M b) Identify important classes and their responsibilities for the following scenario and write

class diagram with correct UML notations. “Car marketing company wants to keep track of marketed cars and their owner. Each car must be associated with a single owner and owner may have any number of cars. We store car’s registration number, model & color and owner’s name, address & SSN. We also store date of purchase of each car”.

9M

4. a) Bring out the significance of inheritance with suitable example. 7M b) Based on your experience in a super market, that is, a customer arrives at a checkout with

items to purchase, the cashier records the purchased items and collects the payment. On completion, the customer leaves with the items. Develop a use case with at least two variations that could serve a basis for understanding the requirements of the system.

8M

Unit – III

5. a) What is use case? Construct a use case diagram for student information system. 8M b) Describe two standard stereotypes that apply to use cases.

7M

6. a) Define Composite state. Explain orthogonal and disjoint substates with examples. 8M b) What is an Event? List and Explain kinds of events. 7M

Unit – IV

7. a) Differentiate between Components and Classes with examples. 7M b) Briefly explain the properties, contents and common uses of component diagram.

8M

8. a) Explain the similarities and differences between components and nodes with suitable examples.

8M

b) Enumerate the steps to model physical databases through the use of component diagram.

7M

Unit – V

9. a) Draw a sequence diagram for the process of online flight ticket booking. 8M b) List and explain the Elements of a Deployment Diagram.

7M

10. a) Draw an activity diagram for ATM–withdrawal transaction. 8M b) Draw and explain the Deployment Diagram for an Online Shopping Web Application. 7M




MICRO PROCESSORS AND INTERFACING

(Electrical and Electronics Engineering)



Unit – I

1. a) With block diagram, explain the operation of Execution Unit in 8086. 7M b) Explain the following pins of 8086 processor:

i. BHE

ii. DT/R iii. HLDA iv. READY v. RESET vi. INTR

vii. LOCK

viii. TEST

8M

2. a) Explain any four addressing modes of 8086 with examples. 8M b) Explain the memory segments of 8086 with a neat diagram.

7M

Unit – II

3. a) What is assembler directive? Explain the following assembler directives with examples. i. Segment ii. dq iii. Assume

7M

b) Write an assembly language program for sorting numbers using Bubble sort technique.

8M

4. a) Explain the following string instructions supported by 8086 microprocessor: i. CMPSB/CMPSW ii. SCASB/SCASW iii. LODSB/LODSW

8M

b) Classify branch instructions of 8086 microprocessor.

7M

Unit – III

5. a) Elaborate an internal architecture of 8257 with the help of block diagram. 8M b) Write an assembly language program to interface stepper motor with 8086.

7M

6. a) Explain interfacing RAM, EPROM to 8086. 7M b) Draw and explain the pin configuration of 8255 in detail.

8M

Unit – IV

7. a) Write a scheme to generate NMI interrupt in 8086 on power failure and explain. 7M b) Explain the types of interrupts along with action taken by 8086 when an interrupt occurs.

Also explain the interrupt vector table.

8M

8. a) Explain data transfer using USART. 7M b) What is RS 232 standard? Differentiate between Asynchronous and synchronous data

transfer.

8M

Cont…2

:: 2 ::

Unit – V

9. a) With a neat diagram, write the addresses of SFR’s and ports. Also give 128 bytes of RAM allocation.

8M

b) Explain the structure of Timer of 8051 with reference to mode-1 operation.

7M

10. a) Explain the functions of RS232C pins of DB-9 connector. 7M b) Write an 8051 program to send the data message ‘Morning’ of length seven characters at

a baud rate of 4800, 8 bits data and 1 stop bit serially. 8M




DIGITAL SIGNAL PROCESSING




Unit – I

1. a) Define LTI system, stability and causality. 7M

b) Check the following systems for their linearity and shift variance properties:

i. 10logy n x n

ii.

2

2

1

1y n x n

x n

8M

2. a) Define a signal, system, frequency response and impulse response. 7M

b) y n x n 2 . Is this system linear, time invariant, memory less, causal and stable?

8M

Unit – II

3. a) Show that convolution in time domain is multiplication in frequency domain. 7M

b) Calculate 8 point DFT of 1,1 .,1,1x n

8M

4. a) Derive the signal flow graph of radix 2 DIT-FFT algorithm using 8 points. 8M b) Use 8 point radix-2 DIT-FFT algorithm to find the DFT of the sequence:

0.707,1,0.707,0, 0.707, 1, 0.707,0 .x n

7M

Unit – III

5.

a) Find Z-transform and ROC of 2

5 12 1 3 .

6 2

n n

x n u n u n

7M

b) Obtain the direct form– 1 and cascade realization of the following LTI system.

13 9 1

1 2 3 4 1 3 212 24 24

y n y n y n y n x n x n x n

8M

6. a) Plot the pole-zero pattern and determine which of the following systems are stable:

i. 1 0.8 2 2y n y n y n x n x n

ii. 2 1 0.8 2 0.8 2y n y n y n x n x n

8M

b) Find the digital network in direct and transposed form for the system described by the difference equation.

2 0.3 1 0.5 2 0.7 1 0.9 2 .y n x n x n x n y n y n

7M

Unit – IV

7. a) The frequency response of an FIR filter is given by:

3 1 1.8 cos 3 1.2 cos 2 0.5 cos .jwH w e w w w Determine the coefficients of the

impulse response h(n) of the FIR filter.

9M

b) Determine the frequency response of the symmetric hanning window given by.

1

1 cos ,2

0,han

nM n M

W n M

else

6M

Cont…2

:: 2 ::

8. a) Find the impulse response h n of a linear phase FIR filter of length 4N for which the

frequency response at 0w and 2

w

is given by 0 1Hr and 1

2 2

Hr

9M

b) Write short notes on: i. Blackman window ii. Hamming window

6M

Unit – V

9. a) Compare analog and digital filters. What are the requirements for the digital filter to be causal?

5M

b) Design an analog Butterworth lowpass filter that has -2dB passband attenuation at frequency of 20 rad/sec and at least -10dB stopband attenuation at 30 rad/sec.

10M

10. a) Design a chebyshev type-1 filter to meet the following specifications: i. Passband ripple ≤ 2 dB ii. Stopband attenuation ≥ 20 dB iii. Passband edge = 1 rad/sec iv. Stopband edge = 1.3 rad/sec

9M

b) A 3rd order butterworth lowpass filter has the following transfer function. Find H(z) using impulse invariant technique:

2

1.

1 1H s

s s s

6M




OPEN SOURCE TECHNOLOGIES




Unit – I

1. a) What are the benefits of using open source technologies? 9M b) Explain briefly any 6 open source applications from any domain.

6M

2. a) Explain in detail how process scheduling is done in Linux. 8M b) What are signals in Linux? Explain briefly any six signals.

7M

Unit – II

3. a) Write a PHP program for Multiplication Table Using Loop. 7M b) Describe the various Error types in PHP.

8M

4. a) Explain the advantages and disadvantages of AJAX. 8M b) Write a PHP program to detect the different browsers capabilities.

7M

Unit – III

5. a) What is DDL? Illustrate any two DDL statements with an example. 10M b) What are Heap tables in MySQL?

5M

6. a) Describe the features that do not supported by MySQL. 6M b) Explain string functions with examples available in MySQL.

9M

Unit – IV

7. a) What are lists, tuples and dictionaries in Python? Give examples to explain. 10M b) Write a Python program to demonstrate exception handling when writing to a file

opened only for reading.

5M

8. a) Write a Python program to demonstrate for & while loops with break and continue statements.

8M

b) Write a Python function to do binary search in an array of integers in ascending order.

7M

Unit – V

9. a) Explain with an example, the string handling in perl. 8M b) Construct a perl program to write on a file.

7M

10. a) Explain the following in Perl: i. $_default variable ii. For each loop construct iii. Join()

9M

b) Describe any three different variables with an example in perl. 6M




PROBABILITY AND STATISTICS




Unit – I

1. a) State and prove Bayes theorem. 7M b) We draw two cards from a deck of shuffled cards without replacement. Find the

probability of getting the second card a queen.

8M

2. a) Define probability, conditional probility and marginal probability. 7M b) An urn B1 contains 2 white and 3 black balls and another urn B2 contains 3 white and 4

black balls. One urn is selected at random and a ball is drawn from it. If the ball drawn is found black, find the probability that the urn chosen was B1.

8M

Unit – II

3. a) Out of 800 families with 5 children each, how many would you expect to have: i. 3 boys ii. 5 girls iii. Either 2 or 3 boys iv. At least one boy

8M

b) Prove that for Normal Distribution Mean, Median and Mode are coincide.

7M

4. a) In a sample of 1000 cases, the mean of a certain test is 14 and standard deviation is 2.5. assuming the distribution to be normal, find how many students score: i. Between 12 and 15 ii. Above 18 iii. Below 18

8M

b) A population consists of five numbers 2,3,6,8,11. Consider all possible samples of size of two which can be drawn with replacement from this population. Find: i. The mean of population ii. The standard deviation of the population iii. The mean of the sampling distributions of means iv. The standard deviation of the sampling distributions of means

7M

Unit – III

5. a) In a sample of 1000 people in Maharashtra 540 are rice eaters and the rest are wheat eaters. Can we assume that both rice and wheat eaters are equally popular in this state at 1% level of significance?

7M

b) A sample of 64 students has a mean weight of 70kgs. Can this be regarded as a sample from a population with mean weight 56kgs and standard deviation of 25kgs.

8M

6. a) A die is tossed 960 times and it falls with 5 upwards 184 times. Is the die is unbiased at a level of significance of 0.01?

8M

b) On the basis of their total scores 200 candidates of a civil service examination are divided into two groups, the upper 30% and the remaining 70%. Consider the first question of the examination. Among the first group 40 had the correct answer where as among the second group 80 had the correct answer. On the basis of these results can one conclude that the first question is not good at discriminating ability of the type being examined here?

7M

Cont…2

::2::

Unit – IV

7. a) To compare two kinds of bumper guards G1 and G2, 6 of each kind were mounted on a car and then the car was run into a concrete wall. The following rate the costs of repairs:

G1 107 148 123 165 102 119

G2 134 115 112 151 133 129

Use 0.01 level of significance to test whether the difference between two sample means is significant.

8M

b) The Blood Pressure of 5 women before and after intake of a certain drug are given below:

Before 110 120 125 132 125

After 130 118 125 136 121

Test whether there is significant change in Blood Pressure at 1% level of significance.

7M

8. a) Explain how to test for equality of population variances. 8M b) A die is thrown 264 times with the following results. Show that the die is biased:

No. on the die 1 2 3 4 5 6

Frequency 40 32 28 58 54 52

7M

Unit – V

9. a) i. Discuss queuing theory and explain its applications ii. Explain Pure birth and Death Process

8M

b) A bank plans to open a single server driven in banking facility at a certain centre. It is estimated that 20 customers will arrive each hour on average. If on average, it requires 2 minutes to process a customer’s transaction determine: i. The proportion of time that the system will be idle ii. On the average, how long a customer will have to wait before reaching the server iii. The fraction of customers who will have to wait

7M

10. a) A self service canteen employs one cashier as its counter.8 customers arrive per every 10 minutes on an average. The cashier can serve on average two per minute. Assuming that the arrivals are Poisson and the service time distribution is exponential, determine: i. The average number of customers in the system ii. The average queue length iii. Average time a customer spends in the system

8M

b) A one person barber shop has 6 chairs to accommodate people waiting for hair cut. Assume that customers who arrive when all the six chairs are full leave without entering the shop. Customers arrive at the average rate of six per hour and spend an average of 15 minutes for service. Find: i. The probability that a customer can get directly into the barber chair upon arrival ii. Expected number of customers waiting for a haircut iii. Effective arrival rate

7M




POWER SYSTEM OPERATION AND CONTROL

(Electrical and Electronics Engineering)



Unit – I

1. a) Explain how heat rate curve and incremental fuel cost curve decide the cost of generation of power in a thermal plant.

7M

b) Three power plants of total capacity 500MW are scheduled for operation to supply total system load of 350MW. Find the optimum load scheduling if the plants have the following incremental cost characteristics and the generator constraints:

1

1

1 25.040 G

G

PdP

dC ,

130 150GP

2

2

2 3.050 G

G

PdP

dC ,

240 125GP

3

3

3 2.020 G

G

PdP

dC

350 225GP

8M

2. a) Derive the transmission loss formula and state any assumptions made. 7M b) The fuel inputs to two plants are given by ,

. the loss coefficients of the system are given by

11 12 22 0.005, 0.00012 0.002.B B and B The load to be met is 200 MW. Determine

the economic operating schedule and the corresponding cost of generation if the transmission losses are included but not coordinated.

8M

Unit – II

3. a) Briefly discuss the different types of hydroelectric power plants. 7M b) Explain hydro thermal load scheduling. Derive equations for short term hydro thermal

load scheduling with losses.

8M

4. a) The following incremental cost pertains to a two plant system: i. (dF1/dP1) = 0.03P1 + 14 Rs/MWhr ii. (dF2/dP2) = 0.04P2 + 10 Rs/MWhr

The losses are B11 = 0.01(MW)-1, B12 = B22 = 0. If for the system is Rs.30/MWhr compute the required generation at the 2 plants and the losses in the system.

7M

b) Explain briefly about pumped storage plant and discuss about the coordination of a thermal plant and a pumped storage plant.

8M

Unit – III

5. a) Represent the IEEE type 1 excitation system using block diagram. Write state equations. 7M b) Obtain the generator and load model. 8M

6. a) Draw the schematic diagram of a conventional governor system and explain. List the major parts of a governor system. Draw the governor speed characteristics.

9M

b) With respect to excitation system define: i. Ceiling voltage ii. Voltage response time iii. Pilot exciter

6M

Cont…2

5016015.0 1

2

11 PPF

5016015.0 2

2

22 PPF

:: 2 ::

Unit – IV

7. a) With a neat diagram explain the importance of load frequency control and economic dispatch control.

8M

b) Consider the block diagram model of LFC given in Fig.1 Make the following assumptions:

g t g t eq1 ST 1 ST 1 T T S 1 ST

Solve for ∆f (t) with parameters given below. Given:

eq p0.01 , T 0.4 0.5 0.9secT 20secdP Pu

g t pK ,K 1,K 100, 3.R

Fig.1

7M

8. a) Derive With block diagrams.

Dc

1Δf= ΔP -ΔP .

1D+

R

10M

b) Explain static response of a two area system for an uncontrolled case.

5M

Unit – V

9. a) Explain clearly what do you mean by compensation of line and discuss briefly different methods of compensation.

7M

b) The load at the receiving end of three phase transmission line is 25MW, p.f. is 0.8 lagging at a line voltage of 33kV. A synchronous compensator is situated at the receiving end and the voltage at both ends is maintained at 23kV. Calculate the MVAR of the compensator. The line has a resistance of 5ohm/phase and inductive reactance of 20Ω/phase.

8M

10. a) Explain about load compensation in detail. 7M b) Derive an expression for voltage and current for an uncompensated line. 8M




VLSI DESIGN (Electronics and Communication Engineering)



Unit – I

1. a) With neat sketches, analyze the three regions of operation of the enhancement mode

nMOS transistor.

7M

b) Explain the functioning of tri-state inverter with relevant diagrams.

8M

2. a) With neat sketches, analyze the three regions of operation of the depletion mode pMOS

transistor.

7M

b) Analyze the following with respect to MOS technology:

i. Threshold voltage ii. Body effect iii. Channel length modulation

8M

Unit – II

3. a) With a neat sketches, explain the different steps involved during Wafer Processing. 10M b) Explain the problem of Latch up in CMOS Circuits.

5M

4. Explain: i. Latch up Prevention ii. Silicon on insulator iii. N well process

15M

Unit – III

5. a) Draw the stick diagram and layout for NMOS inverter. 8M b) Illustrate the lambda based design rules for contact cuts and vias.

7M

6. a) Derive the expression for rise time and fall time of CMOS Inverter. 7M b) Discuss in detail about types of power dissipation in CMOS.

8M

Unit – IV

7. a) Explain the operation of CMOS Complementary Logic with diagram. 8M b) Draw the layout design steps for a CMOS NOR gate.

7M

8. a) Explain the operation of CMOS Pass Transistor Logic with diagram. 7M b) Draw the layout design steps for a CMOS NAND gate.

8M

Unit – V

9. Analyze the following with respect to VLSI testing: i. Fault Models ii. Chip-level test techniques

15M

10. Explain the following testability conditions: i. Use of multiplexers ii. Long counter chains iii. Asynchronous sequential logic iv. Self-resetting logic v. Built-In Self-Test (BIST)

15M




TRANSPORTATION ENGINEERING

(Civil Engineering)



Unit – I

1. a) Explain the any 6 salient points of Lucknow Road Development Plan. 8M

b) Describe the classification of roads according to Nagpur road plan.

7M

2. a) Explain the factors affecting the highway alignment. 8M

b) Area of a district in India is 13000sq.mt and there are 10 towns as per last census.

Determine the lengths of different categories of roads to be provided as per Luknow

planning.

7M

Unit – II

3. a) With usual notation, explain the expression “e+f =V2/127R”. 10M b) Explain the factors on which the Geometric Design of Highway depends.

5M

4. a) Demonstrate the requirement of transition curve in a horizontal alignment and comment upon the ideal transition curve.

10M

b) Interpret on the situations to be satisfied with respect to sight distance design in an uncontrolled intersection.

5M

Unit – III

5. a) Mention the applications of: i. Accident location file ii. Spot maps iii. Collision diagram iv. Condition diagram

5M

b) Spot Speed Studies were carried out at a certain stretch of a highway and the consolidated data collected are given below. Determine: i. Upper and lower values or speed limits for regulation of mixed traffic flow ii. The design speed for checking the geometric design elements of the highway

Speed Range, Kmph

No. of Vehicles Observed

Speed Range, kmph

No. of Vehicles Observed

0-10 12 50-60 255

10-20 18 60-70 119

20-30 68 70-80 43

30-40 89 80-90 33

40-50 204 90-100 9

10M

6. a) Discuss about the various methods of collecting data for O and D studies with their relative feasibility to adopt.

10M

b) Explain briefly the steps adopted in Webster’s method of signal design. Mention the advantage of this method.

5M

Cont…2

:: 2 ::

Unit – IV

7. a) Explain requirements of At grade separated intersection. 8M b) What are channelized Intersections?

7M

8. a) What are traffic Islands? 8M b) List Advantages and limitations of rotary Intersection.

7M

Unit – V

9. a) Discuss the desirable properties of paving bitumen. 8M b) Mention the materials and construction steps for bituminous surface dressing.

7M

10. a) Explain the various types of stresses in CC pavements, causes and remedial measures with neat sketches.

8M

b) Explain with neat sketches the lowering of water table, seepage flow and capillary rise in sub surface drainage system.

7M




WATER RESOURCES ENGINEERING-II

(Civil Engineering)



Unit – I

1. a) You are in charge of a project in the following situations. Explain what type of reservoir you recommend and why: i. A perennial river where floods are common ii. A non perennial river in a southern state iii. A river flowing very near to any coming city

12M

b) Explain the importance of dead storage in a reservoir with a neat sketch.

3M

2. a) Classify the dam based on construction materials. 5M b) The mean monthly discharges of a river in a dry year are as given below:

Month Mean Flow Month Mean Flow

Jan 32.0 July 44.0

Feb 62.0 Aug 71.0

Mar 83.0 Sept 97.0

April 59.0 Oct 75.0

May 24.0 Nov 47.0

June 23.0 Dec 35.0

Determine the minimum capacity of a reservoir if the entire annual flow is to be drawn off at a uniform rate.

10M

Unit – II

3. a) What do you understand by a gravity dam? Explain various forces that are acting on a gravity dam.

8M

b) Distinguish between a low gravity dam and a high gravity dam. Derive the expression used for such a distinction.

7M

4. a) A masonry dam 10m high is trapezoidal is section with a top width of 1m and bottom width of 8.25m. The face exposed to water has a batter of 1:10. Test the stability of the dam. Find out the principal stresses at the toe and heel of the dam. Assume unit weight of masonry as 22.4kN/m3. For water 9.81kN/m3 and permissible shear stress of joint=1400 kN/m2.

11M

b) The following Fig.1 given the profile of a dam with reservoir level as shown. Of the coefficient of friction is 0.75 is the dam safe against sliding? Take weight density of concrete=2.4t/m3.(Neglect the uplift pressure).

Fig.1

4M

Cont…2

:: 2 ::

Unit – III

5. a) What is spill way? What are the essential requirements of a spill way. 7M b) Sketch with details any two types of Earthen dams.

8M

6. a) Explain an Ogee spillway with a neat sketch. How it is designed. 7M b) Define stilling basin. With a neat sketch of USBR type II stilling basin, explain the function

of chute blocks, baffle blocks and end sill provided in type II.

8M

Unit – IV

7. a) Draw neat layout of diversion head works and indicate the various components of the system. Briefly indicate the function of each component.

9M

b) Differentiate between a weir and barrage.

6M

8. A weir with a vertical drop has the following particulars: Nature of bed : Coarse sand with the value of Bligh’s C = 12 Flood discharge = 300cumecs Length of weir = 40m Height of weir above low water = 2m Height of falling shutter = 0.6m Top width of weir = 2.0 m Bottom width of weir = 3.5m Design the length and thickness of aprons and draw the cross section of the weir.

15M

Unit – V

9. Explain the design procedure of Trapezoidal notch.

15M

10. a) Enumerate the various types of canal drops and explain why are drops are constructed in an irrigation canal.

7M

b) Name the different types of cross drainage works. Explain how you would avoid one type of cross drainage work and prefer to adopt another type by changing alignment of the canal taking off from a head work.

8M




POWER ELECTRONICS (Electrical and Electronics Engineering)



Unit – I

1. a) Derive an expression for the anode current of thyristor with the help of two transistor analogy.

9M

b) Draw the VI characteristics of an SCR and describe the different regions and operating points in it.

6M

2. a) Using the cross-sectional diagram, describe the structure of IGBTs. 7M b) Write short notes on the turn-ON methods of SCRs.

8M

Unit – II

3. a) With neat diagram and waveform, explain the principle of single phase full converter with purely resistive load. Derive the expression for average output voltage and rms output voltage.

7M

b) A single phase fully controlled thyristor bridge converter supplies a load consisting of R,L and Vc. The inductance L in the circuit is so large that the output current may be considered to be virtually constant. Assume the SCR to be ideal with following data. RMS supply voltage=220V, load resistance=0.5Ω, output current Idc=10A .Determine: i. Firing angle α if Vc=135V ii. α if Vc =-145

8M

4. a) Explain the operation of single phase semi controlled converter connected to R load with neat circuit diagram and wave forms.

8M

b) A single phase 230V, 1kW heater is connected across a single-phase, 230V, 50Hz supply through an SCR. For firing angles of 450 and 900, calculate the power absorbed by the heater element.

7M

Unit – III

5. a) With a neat diagram and waveforms, explain three phase fully wave controlled rectifier. 8M b) For a 3-phase half wave converter driving a large inductive load. Derive an equation for

i. Form factor and ripple factor ii. Thyristor and supply current ratings iii. Thyristor current rating for R=10Ω and α= 30

7M

6. a) Derive an expression for output voltages of single phase fully controlled bridge having source inductance Ls. The overlap angle is µ due to source inductance.

9M

b) With the help of circuit diagram and waveforms explain the operation of single phase AC voltage controller with R L load. Derive an expression for output voltage.

6M

Unit – IV

7. a) Discuss the operation of a Morgan chopper with appropriate waveforms. Also mention the advantages of Morgan chopper compared to Jones chopper.

9M

b) The input voltage to a step up chopper is 6V. The average output voltage is 18V and average load current is 0.4A. The switching frequency is 20kHZ. The filter elements values are 250uH and 420uF. Determine the duty cycle, ripple current of inductor, the peak current of inductor, and the ripple voltage of filter capacitor.

6M

Cont…2

:: 2 ::

8. a) Draw the schematic diagram of a single phase ac chopper and discuss the operation, in

brief, with output voltage and current waveforms. 8M

b) Explain the operation of a single phase to single phase cycloconverter with center tapped transformer configuration.

7M

Unit – V

9. a) Explain with circuit diagram the operation of single phase full bridge inverter with R- L load.

7M

b) The single phase full bridge inverter has a resistive load of R 2.4Ω and the DC input voltage of Vs 48V. Determine: i. The output power ii. The peak and average currents of each transistor

8M

10. a) What is the different pulse width modulation techniques used for inverters? 8M b) The single phase half bridge inverter has a resistive load of 10Ω and the center tap dc

input voltage is 96V. Compute: i. RMS value of the output voltage ii. Fundamental component of the output voltage waveform iii. First five harmonics of the output voltage waveform iv. Fundamental power consumed by the load v. RMS power consumed by the load

7M




FINITE ELEMENT METHODS




Unit – I

1. a) Write the applications of FEM. 7M b) Distinguish between FDM and FEM.

8M

2. a) Explain the properties of shape function with an example. 5M b) For the spring shown in Fig.1, determine the nodal displacements using principle of

minimum potential energy:

Fig.1

10M

Unit – II

3. Consider the three bar truss shown in Fig.2. It is given that E= 2 x 105 MPa, determine the nodal displacement and stress in each member. Find the support reaction also:

Fig.2

15M

4. For the beam shown in Fig.3, Determine the end reaction and deflection at mid span. Take E= 200 GPa, I = 4 x 106 mm4.

Fig.3

15M

Unit – III

5. a) Derive Shape functions for 3noded triangle element. 5M b) A CST element has coordinates 1(5, 5), 2(25, 5) and 3(15, 15) and thickness unity.

E=200GPa and = 0.3 If element nodal displacement vector is given by q1=0.005, q2=0.002, q3=0.0, q4=0.0, q5=0.004 and q6=0.0mm, determine the element stress under plane strain condition.

10M

Cont…2

:: 2 ::

6. a) Explain the convergence requirements for shape function. 5M

b) Evaluate = 1

2

1

1(3 )

( 2)

xe x dxx

using two point Gauss Quadrature and compare with

analytical solution.

10M

Unit – IV

7. For the brick wall shown in Fig.4, the inner temperature is 280C and the outer surface is exposed to cold air at -150C.Determine the temperature distribution in steady state within the wall by considering 2 one dimensional heat flow elements. k=0.7 W/m0C and h=40W/m2 0C.

Fig.4

15M

8. A shaft of length 1m and having a square cross section of 50mm sides is fixed at one end and subjected to a torque of 100N-m at the free end. Consider one fourth of the cross section and using two 3 node linear triangle elements, determine: i. Element stiffness matrices and load vectors ii. Global stiffness matrix and load vector iii. Total angle of twist Take G=80Gpa.

15M

Unit – V

9. Find the natural frequencies of longitudinal vibration of the unconstrained stepped bar shown in Fig.5.

Fig.5

15M

10. Derive element mass matrices for: i. Bar element ii. Truss element iii. CST element

15M




ENTREPRENEURSHIP




Unit – I

1. a) Entrepreneurs are always faced with issues and challenges. What are the initiatives taken by government to overcome the barriers?

8M

b) Entrepreneurship is more of a science than art. Do you agree? Discuss.

7M

2. a) “Ethics” play an important role in Entrepreneurial journey. Do agree. Justify. 8M b) Mention different barriers to entrepreneurs.

7M

Unit – II

3. a) Explain briefly about the role of government in providing institutional support to entrepreneurs in development of economy of the country.

8M

b) What is the role of Industrial development bank of India in development of entrepreneurship in the country?

7M

4. a) What is the role of MSMEs in development of entrepreneurship in the country? 8M b) What are the objectives of SIDO? Discuss the services offered by SIDO.

7M

Unit – III

5. a) Define a women entrepreneur. What role does a women entrepreneur plays in developing and growth of an economy.

7M

b) Explain the problem faced by women entrepreneurs in India.

8M

6. a) What role the government is playing in encouraging the women entrepreneurs. 7M b) Discuss the significance of Women in India’s Entrepreneurial Sector.

8M

Unit – IV

7. a) Explain social cost benefit analysis. 7M b) What are the different stages involved in project identification.

8M

8. a) Why is project report important to entrepreneurs? 8M b) Discuss the importance of project financing in project management.

7M

Unit – V

9. a) Explain the process of collection of feedback of trainees and assessment of performance of trainers.

8M

b) How does feedback help the entrepreneurs?

7M

10. a) An appropriate training programme is vital to nurturing entrepreneurs. Discuss. 8M b) Explain the different methods of designing training programs for entrepreneurs. 7M




ENVIRONMENTAL ENGINEERING-I (Civil Engineering)



Unit – I

1. a) Explain the following terms with respect to water supply scheme: i. Wholesome water ii. Palatability of water iii. Percapita demand iv. Design period

8M

b) For the following data given below, estimate the future population of a city in the year 2040 by AIM, GIM and IIM:

Year 1970 1980 1990 2000 2010

Population 81420 125000 170000 220000 230000

7M

2. a) Describe an Intake structure. Illustrate with a neat sketch, a river intake structure along with various components.

8M

b) Discuss the physical, chemical characteristics of water.

7M

Unit – II

3. a) Illustrate Jar test apparatus for determining optimum coagulant dosage in the laboratory. 7M b) At a water treatment plant, 12million liters of water is treated daily using alum dosage of

16mg/lit. Determine total quantity of alum used daily and amount of carbon dioxide released per day. Use the following molecular weights: Al=27; S=32; O=16; H=1; Ca=40; C=12.

8M

4. a) Enumerate different chemicals used for coagulation. Explain any two of them with possible chemical reactions.

8M

b) A city has a population of 1,00,000 with an average rate of demand of 160lpcd. Find the area of rapid sand filter.

7M

Unit – III

5. a) Classify pumps based on the mechanical principle of water lifting and indicate their suitability.

8M

b) Explain the principles of house drainage.

7M

6. a) Explain conservancy and water carriage system of sanitation along with their relative merits and demerits.

8M

b) For a waste water sample, 5-day BOD at 20˚C is 200mg/l and is 67% of the ultimate. What would be the 4 day BOD @ 30˚C?

7M

Unit – IV

7. a) Explain the lay out and general outline of sewage treatment plant. 8M b) Design a sedimentation tank to treat 5mld of sewage.

7M

8. a) Why grit chambers are used? How does it function? Give examples. 8M b) Explain the secondary waste water treatment using Rotating Biological Contactors. 7M

Cont…2

:: 2 ::

Unit – V

9. a) List out different types of sludge digestors. Discuss the factors affecting the capacity of digestors.

7M

b) Explain with the help of neat sketch, the process of sludge treatment in sludge digestion tank.

8M

10. a) Explain the self purification process of natural streams. 8M b) Design a septic tank for a colony 150 users. Assume necessary data. 7M




DATABASE MANAGEMENT SYSTEMS (Electrical and Electronics Engineering)



Unit – I

1. a) Explain with a neat diagram the architecture of a DBMS. 8M b) Design a E-R diagram for a library management system using three classes of books,

publisher and member (borrower).

7M

2. a) Design a E-R diagram for hospital management system. 7M b) Define the following terms:

i. Participation constraint ii. Overlap constraint iii. Aggregation iv. Role indicator

8M

Unit – II

3. a) What is a Constraint? Explain the following constraints with an example: i. Primary key ii. Check iii. NOT NULL

9M

b) Define OUTER JOIN operator with examples.

6M

4. a) Discuss unary and binary relational operations with examples. 10M b) Explain DIVISION operation with an example.

5M

Unit – III

5. a) Discuss the need for normalisation. Explain first, second, third, normal forms with examples.

9M

b) Suppose that we have the following three tuples in a legal instance of a relation schema S with three attributes ABC (listed in order): (1, 2, 3), (4, 2, 3) and (5, 3, 3). i. Which of the following dependencies can you infer does not hold over schema S ii. Can you identify any dependencies that hold over S

6M

6. a) List and explain problems related to decomposition. 8M b) State the need for schema refinement. List the problems caused due to redundancy.

7M

Unit – IV

7. a) Explain conflict Serializability? Discuss how to test for conflict serializability. 8M b) Explain the idea behind Multiple Granularity Locking Scheme? Name different locks that

are used in this Scheme. Give its matrix compatibility.

7M

8. a) When we will go for transaction rollback? Explain the necessary in checking for Cascading rollback with a Schedule.

8M

b) Explain about log-based recovery in detail.

7M

Unit – V

9. a) What is the difference between a clustered index and an unclustered index? If an index contains data records as ‘data entries,’ can it be unclustered?

5M

b) List and explain how XML data can be queried in DB2.

10M

10. a) Explain lists node directory command in DB2 and their properties. 8M b) Discuss B+ trees with an example. 7M




ENERGY MANAGEMENT

(Civil Engineering)



Unit – I

1. a) Discuss the responsibilities of the energy manager in an organization. 8M b) Describe the role of energy management as a permanent process of improvement in the

company.

7M

2. a) With a neat block diagram, explain the circular process of energy management. 8M b) Identify and explain the key components of the energy management program.

7M

Unit – II

3. a) What are the short term energy conservation schemes and medium term energy conservation?

8M

b) Explain the general energy auditing.

7M

4. a) Explain the cumulative monthly load profile showing the energy consumption. 8M b) What are the various resources for plant energy studies?

7M

Unit – III

5. a) What is the scope of a new energy project and what are the various requirements? 8M b) Explain the various methods of investment appraisal.

7M

6. a) Explain the cost optimization with one variable method. 8M b) Explain the cost optimization with more than one variable.

7M

Unit – IV

7. a) Explain the reasons for replacement of any machine. 7M b) Acme owns a CNC machine that it is considering replacing. Its current market value is

$25,000, but it can be productively used for four more years at which time its market value will be zero. Operating and maintenance expenses are $50,000 per year. Acme can purchase a new CNC machine, with the same functionality as the current machine, for $90,000. In four years the market value of the new machine is estimated to be $45,000. Annual operating and maintenance costs will be $35,000 per year. Should the old CNC machine be replaced using a before-tax MARR of 15% and a study period of four years?

8M

8. a) Discuss the roles and responsibilities of an energy consultant. 8M b) Write a note on Defender’s marginal cost data.

7M

Unit – V

9. a) Explain the concept of solar radiation. What are the various solar energy collectors? 8M b) Explain the thermal storage system with its characteristics.

7M

10. a) What is the importance of wind energy and explain the wind energy characteristics? 8M b) Explain about different types of wind energy turbines. 7M

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VARDHAMAN COLLEGE OF ENGINEERING · 2018-12-10 · Question Paper Code: A1125 VARDHAMAN COLLEGE OF...

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