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8/9/2019 Basic 1 Full Test
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Shashank Kumar Sinha(Enroll User)
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SCORE CARD TIME MANAGEMENT QUESTIONS REPORT SOLUTION
Solution Report For Full Syllabus Test : 1Represent whole test solution with correct and incorrect answers.
View Your Test Analysis
Q.No
Question Status
Q.1
Not Attempt Correct Ans. b Solution
If the product of two integers 53 and 22 in a specific number system is
1276, then what is the decimal equivalent of the number 4371 in the
same number system?
a. 3323
b. 3223
c. 3232
d. 3213
Q.2
Attempt Correct Correct Ans. c Solution
Choose the pair of words to be placed in the 2 blanks in th e given
sentence so that the completed sentence becomes meaningful.
After having been close friends for more than a decade, they had a
_____ last year and have not _____ each other ever since.
a. fight, talked
b. argument, met
c. dispute, seen
d. quarrel, admired
Q.3
In the sentence that follows, two words or phrases have been
REPORTS
NEWS
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Attempt Correct Correct Ans. c Solution
highlighted. One of them or both of them or none of them may have an
error. Identify the option containing a pair of words/phrases that will
make the sentence most meaningful.
While the company make great strides on the environment front, it has
updated its HR policies.
a. make, will update
b. making, updatingc. made, did not update
d. No correction required
Q.4
Attempt Correct Correct Ans. b Solution
Which of the phrases given below should be placed in the blank space so
as to get a meaningful and grammatically correct sentence?
Although information technology has entered the homes, offices and
hearts of many Indian citizens, ________.
a. India provides the highest number of IT experts to the world every year.
b. many people in the rural areas still remain ignorant of its immensebenefits.
c. government has done its best by funding research in this fieldappropriately.
d. the face of communication is likely to change completely in the years tocome.
Q.5
Attempt Correct Correct Ans. 57
Solution
The missing number of the series is ____________.
7 8 18 _____ 232 1165
Q.6
The paying capacity of people who travel on routes connecting smaller
towns is relatively low. Most successful airlines that operate in such
regions have a large number of seats.
Which of the following can be inferred based on the information given
above?
a. Regional airlines are quite profitable.
b. People from cities are increasingly travelling to smaller towns.
c. Regional airlines have to charge low fares in order to cover theircosts due to increased traffic.
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Attempt Correct Correct Ans. c Solution
d. The number of people travelling from small towns to cities is very large.
Q.7
Not Attempt Correct Ans. b Solution
Three boxes labeledA, B and C have a total of 249 marbles. If 3 dozen
marbles are transferred from box A to box B, box B will have 5 timesthe number of marbles in box A. Instead, if 21 marbles are transferred
from box B to box C, the number of marbles in box B will be 1.5 times
the number of marbles in box C. How many marbles should be
transferred from box A or B so that the number of marbles in both A
and B is identical?
a. 30 from box A to box B
b. 30 from box B to box A
c. 36 from box A to box B
d. 36 from box B to box A
Q.8
Not Attempt Correct Ans. d Solution
Ifx2 y2 = 702, how many ordered pairs of solutions forx and y exist
such thatx, y are natural numbers?
a. a unique pairb. 2
c. 4
d. no valid solution
Q.9
Attempt Correct Correct Ans. d Solution
A book shelf has 27 books 9 books each written by 3 eminent authors.
If Raj selects any 2 books without looking at their authors name, what is
the probability that he picks up books written by different authors?
a. 13
b. 918
c. 927
d. 913
Q.10
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Attempt Incorrect Your Ans. 2102.4 Correct Ans. 2100
Solution
Venkat earns Rs 18,00,000 per annum which is spent under various
heads as under:
Food : 24%
Transportation and House rent : 19%
Clothing : 9%
Miscellaneous heads : 22%
Savings : 14% Loan installment : Rs18,000 per month.
If he cuts down his expenditure on food by 4.33% and his clothing
expense is down by 4% and the entire saving thus achieved is used to
pay off his loan, then the increase in the monthly installment of loan that
he can afford is Rs ______________ .
Q.11
Attempt Correct Correct Ans. a Solution
The reason why an n -p - n transistor is preferred over ap - n -ptransistor is
a. holes have lower mobility than electrons.
b. holes are not real quantity hence complicated analysis.
c. n -p - n transistor is more immune to noise.
d. n -p - n transistor is easier to fabricate.
Q.12
Attempt Correct Correct Ans. b Solution
Let x(t) be a signal whose Laplace transform X (s) is given as
, then the signalx(t) is
a. u(t) 2u(t 2)
b. u(t) u(t 2)
c. u(t 2)
d. tu(t 2)
Q.13
A system has 13 poles and 3 zeros. Its high frequency asymptote in the
magnitude plot has a slope of
a. 200 dB/dec
b. 240 dB/dec
c. 280 dB/dec
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Attempt Correct Correct Ans. a Solution
d. 320 dB/dec
Q.14
Attempt Correct Correct Ans. b Solution
In time division multiplexing, the noise contribution of PM detector as
compare to FM detector is
a. less
b. more
c. equal
d. unknown
Q.15
Not Attempt Correct Ans. c Solution
The circuit given below is at steady state
The current i1and i2are respectively
a. 2 A, 2 A
b. 2 A, 5 A
c. 5 A, 2 A
d. 2 A, 5 A
Q.16
A full adder circuit is designed using 2 input NAND gates only. If
propagation delay of one NAND gate is 50 nsec. Then maximum number
of additions per second are
a. 2.22 106
b. 3.33 106
c. 20 106
d. 1 106
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Attempt Incorrect Your Ans. a Correct Ans. b
Solution
Q.17
Attempt Correct Correct Ans. c Solution
In a crystal oscillator if we choose a frequency which lies between s
and p, where sis the series resonant frequency and pis the parallel
resonance frequency then the reactance of the crystal will appear as
a. Capacitive
b. Resistive
c. Inductive
d. Short circuit
Q.18
Attempt Correct Correct Ans. d Solution
The output of a FM modulator is fed to a frequency multiplier by 8 and
then fed to a mixer with local oscillator frequency 12 MHz. If the original
frequency deviation is 25 MHz, then the frequency deviation at the
output of the mixer will be
a. 25 MHz
b. 12 MHz
c. 100 MHz
d. 200 MHz
Q.19
Attempt Correct Correct Ans. d Solution
An electric flux density vector is given by
. The volume charge
density v(C/m3) is given by
a. cosy+ 1
b. cosy+ y
c. y
d. 1
Q.20
Letx[n] be a discrete time signal whose z - transform is represented by
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Attempt Incorrect Your Ans. d Correct Ans. b
Solution
X(z). The z - transform of the signal will be
a.
b.
c. X (2z)
d. 2X(2z)
Q.21
Attempt Correct Correct Ans. a Solution
The equation (where n0 andp0 are the concentrations of
the n - type andp - type carriers in a given semiconductor and ni is the
intrinsic c arrier concentration) is valid under
a. Thermal equilibrium
b. Thermal variations
c. Electric field
d. No concentration gradient of charge carriers
Q.22
Attempt Incorrect Your Ans. a Correct Ans. c
Solution
A digital computer has a memory unit with 20 bits per word. The
instruction set consists of 120 different operations. Each instruction is
stored in 1 word of memory and consists of operation part and address
part. The number of words can be accommodated by the memory unit
are
a. 220
b. 28
c. 213
d. 27
Q.23
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Attempt Correct Correct Ans. b Solution
Let with detA = 1. IfA has no real eigen values, then
a. (a + d )2> 4
b. (a + d )2
< 4c. (a + d )2= 16
d. a + d < 4
Q.24
Attempt Correct Correct Ans. b Solution
The Laplace transform of cos (4t) sin (2t) is
a.
b.
c.
d.
Q.25
Attempt Correct Correct Ans. c Solution
IfA2A + I = 0, then the inverse ofA is
a. Ab. A + I
c. IA
d. AI
Q.26
The signal flow graph of a control system is given below
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Attempt Correct Correct Ans. 5 Solution
The number of feedback loops in the system are ______.
Q.27
Attempt Incorrect Your Ans. 11 Correct Ans.2.73 (2.60 to 2.80)
Solution
A re sistor R and a capacitor 2 F are connected in series across a 200 V
DC supply. Across the capacitor a neon lamp is connected that turns ON
when voltage across it is 120 V. The value of R to make the Lamp turn
ON 5 sec after the switch closed is ______ M.
Q.28
Attempt Incorrect Your Ans. 3 Correct Ans. 6
Solution
A bank has 3 locks with 1 key for each lock. Each key is owned by a
different person. In order to open the vault atleast two people must insert
their keys into the assigned locks. All the keys are not inserted at the
same time. If the system is to be designed with only two input NAND
gates, then number of NAND gates required are _______.
Q.29
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Attempt Incorrect Your Ans. 32 Correct Ans. 8
Solution
A signalx(t) is defined in the range 5 t 5 and has energy of 16 units.
If a new signal y(t) is formed by transforming x(t) and is given as
, then the energy of the new signal y(t) will be
______ units.
Q.30
Not Attempt Correct Ans. 520 Solution
The Nyquist sampling rate for a signal m(t) = cos 200t 2 cos 320t is
_______ Hz.
Q.31
Attempt Incorrect Your Ans. 2 Correct Ans.2.50 (2.40 to 2.60)
Solution
Consider a dielectric (r = 2.25) filled rectangular waveguide with
dimensions a b (a > b). If the cut off frequency of the guide is 4 GHz,
then the value of dimension ais ______ cm.
Q.32
Not Attempt Correct Ans. 44.89 (44.60 to 45.00) Solution
In the figure shown below the minimum value of RB such that the
transistor is operating in active mode is _____ k. (Assume VCE(sat) =
0.2 V and VBE(sat)= 0.8 V).
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Q.33
Not Attempt Correct Ans. 1.12 (1.00 to 1.25) Solution
When a p -n junction is formed it gives rise to formation of a built in
voltage at the junction. If it is given that the difference in the energy level
of the conduction band at the p and n side is 1.12 eV then the built in
potential is _______ V. Given NA= 1016cm3, ni = 1.6 10
15 cm3, 0 =
8.85 1012
F/m,q = 1.6 1019
C}
Q.34
Attempt Incorrect Your Ans. 0 Correct Ans. 1
Solution
The area enclosed between the curve y = loge(x + e) and the coordinate
axes is _________.
Q.35
Not Attempt Correct Ans. 0 Solution
If then the value of div curl at (1, 1, 1) is
___________.
Q.36
Attempt Incorrect Your Ans. b Correct Ans. a
Solution
The random process Z(t) is defined as Z(t) =X + Y where X and Y are
independent random variables.X is uniformly distributed on (1, 1) and Y
is uniformly distributed on (0, 1)
The auto correlation function of Z(t) is Rz(), value ofRz(0) is
a.
b.
c.
d.
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Q.37
Attempt Correct Correct Ans. c Solution
The state model of a control system is given by
where,
The system is said to be
a. Undamped
b. Underdamped
c. Overdamped
d. Critically damped
Q.38
Not Attempt Correct Ans. b Solution
The Z11for the network given below is
a. 2.4
b. 0.8
c. 7.2
d. 1.33
Q.39
In the given circuit below
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Attempt Correct Correct Ans. a Solution
It was observed that for L = 1 H and C = 1 F, the output of a square wave
is a triangular wave, then the possible value of Z2(s) is
a.
b.
c.
d.
Q.40
Not Attempt Correct Ans. b Solution
An air filled rectangular waveguide with inside dimensions 2 1 cm is
excited with a source of 7 GHz. If the waveguide is operating in dominant
mode, then phase constant inside the waveguide is given by
a. 56.4 rad/m
b. 0 rad/m
c. 146.6 rad/m
d. 28.2 rad/m
Q.41
Consider the circuit given below
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Not Attempt Correct Ans. b Solution
Let = 14, then, the Thevenin equivalents at the terminal a b are
a. 1.87 V, 25
b. 1.87 V, 11
c. 0.54 V, 20
d. 0.54 V, 15
Q.42
Not Attempt Correct Ans. a Solution
Consider a signalx(t) as shown in the figure below.
If a signal y(t) is defined such that , (where
is convolution) then the value of y(0) is
a. 1
b. 2
c. 0
d. 4
Q.43
Consider the following assembly language program. MVI H, 10 H
MVI L, 10 H
LOOP: DCR L
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Attempt Incorrect Your Ans. a Correct Ans. d
Solution
JNZ LOOP
DCR H
JNZ LOOP
If the following program is executed in INTEL 8085 then number of times
the instruction DCR L will be executed is
a. 100
b. 256c. 2320
d. 3856
Q.44
Attempt Incorrect Your Ans. b Correct Ans. d
Solution
Consider the circuit given below
The minimized expression for F (X, Y, Z ) is
a.
b.
c.
d.
Q.45
Consider a series RLC circuit fed from a fixed RMS voltage having
variable frequency. Which of the following graph shows the variation of
net reactance with frequency? (f0is resonant frequency).
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Attempt Incorrect Your Ans. a Correct Ans. c
Solution
a.
b.
c.
d.
Q.46
The region of convergence of a signal x[n] whose z-transform is
represented asX(z), where
a.
b.
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Not Attempt Correct Ans. b Solution
b. 28.8 Mbps
c. 98 Mbps
d. 115.2 Mbps
Q.49
Not Attempt Correct Ans. d Solution
The open loop transfer function of a unity feedback system is
The value of system gain K for which the gain margin is 40 dB.
a. 3
b. 3
c. 12
d. 0.12
Q.50
Attempt Correct Correct Ans. a Solution
An antenna has a radiation resistance of 50 and a loss resistance of
10 . If the power gain of antenna is 20, the directivity is given by
a. 24
b. 16.67
c. 20
d. 200
Q.51
Two transistors having very large are connected as shown in figure
below. Assume that
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Attempt Correct Correct Ans. b Solution
The output voltage V0is
a. 0.8 V
b. -1.4 V
c. 1.4 V
d. 3.6 V
Q.52
A linear time-invariant system is having impulse response h0(t), input to
the system isx0(t) and output to the system is y0(t),
y0(t) = u(t) u(t 4) [u(t) is the unit step function].
A new input signal x0(t 2) and is applied to the system with impulse
response h(t) = h0(t+ 1). Then the output waveform of the systemy(t) is
a.
b.
c.
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Not Attempt Correct Ans. b Solution
d.
Q.53
Not Attempt Correct Ans. c Solution
Two linearly independent solutions of the homogeneous equation,x2y +
xy +y= 0 , are
a. x3/2,x3/2
b. x2,x2lnx
c. cos (lnx), sin (lnx)
d. excos(x),exsinx
Q.54
Attempt Correct Correct Ans. c Solution
If a discrete random variableX has the following probability distribution,
then the standard deviation is
a. 0.5
b. 1
c. 2
d. 2
Q.55
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Not Attempt Correct Ans. a Solution
The value of is
a.b. a
c. 2
d.
Q.56
Not Attempt Correct Ans. 2 (1.90 to 2.10) Solution
Consider the circuit given below.
at t = 0+is ________ V/sec.
Q.57
Not Attempt Correct Ans. 0.50 (0.40 to 0.60) Solution
A closed loop unity feedback system described by the transfer function
If system is subjected to a unit ramp input, the steady state error is
______.
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Q.58
Not Attempt Correct Ans. 5.76 (5.70 to 5.80) Solution
The electric field vector of an uniform plane wave propagating in a
nonmagnetic and lossless medium is given by
The relative permittivity of the medium is _______.
Q.59
Not Attempt Correct Ans. 1.50 (1.40 to 1.60) Solution
Consider the amplifier given below
Assume op-amp to be ideal, the output of the above circuit is given as
V0=A1V1+A2V2
IfA1= 2, then the value ofA2will be _______.
Q.60
Not Attempt Correct Ans. 1 (0.90 to 1.10) Solution
A signal is represented asx(t) whose Laplace transform is denoted byX
(s) where . The value of
signalx(t) at t = 1 sec is ______.
Q.61
A satellite ground station has two amplifiers as shown in below figure.
The effective noise temperature of the combination is ______ K.
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Attempt Incorrect Your Ans. 5000 Correct Ans.120 (119.50 to 120.50)
Solution
Q.62
Not Attempt Correct Ans. 5 Solution
Consider a circuit given below with initial state Q3Q2 Q1Q0as 1010.
Minimum number of clock pulses required to get the initial state again
are _______.
Q.63
Attempt Incorrect Your Ans. 11.52 Correct Ans.9.65 (9.50 to 9.80)
Solution
Consider a germanium sample which is doped with donor impurities ND
= 5 1013cm3and intrinsic carrier concentrationni = 2.4 1013 cm3
at 300 K. At thermal equilibrium minority carrier concentration in
sample is ______ 1012cm3.
Q.64
A bolt is manufactured by 3 machines A, B and C. Machine A turn out
twice as many items as B, and machines B and C produce equal number
of items. 2% of bolts produced byA and B are defective and 4% of bolts
produced by C are defective. All bolts put into 1 stock pile and 1 is
chosen from this pile. The probability that it is defective is __________
101.
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Not Attempt Correct Ans. 0.25 Solution
Q.65
Attempt Correct Correct Ans. 6.11 (6.05 to 6.20) Solution
The directional derivative of f (x, y, z) =x2 y2 + 2z2 at P (1, 2, 3) in the
direction of line PQ, where Q = (5, 0, 4), is __________.
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