MSBTE Question Set - K. B. P. Polytechnic, Satara · Web viewDescribe with neat sketch working of...

Year : TYME 2016-17 Sub: Industrial Fluid Power (17608)

Assignment No. 1Introduction to oil hydraulic systems

Sr. No.

Question Exam Marks

1 Describe with neat sketch general layout of hydraulic system. Sample Paper

G Scheme4

2 Draw general layout of Hydraulic circuit and label the components.

Sample Paper

G Scheme3

3 Give merits and limitations of hydraulic system Sample Paper

G Scheme4

4 Suggest suitable system with reasoning for following applicationsi) JCB, ii) Robot arm, iii) Universal testing machine, iv) Bolt tightening gun.

Sample Paper

G Scheme6

5 List the essential properties of oil used in hydraulic system Sample Paper

G Scheme4

6 State the application of hydraulic system. 47 Draw and explain the working of hydraulic system with its

general layout. W2014 4

8 Describe essential properties of oils used in oil hydraulic circuits (Any eight) S2015 4

9 Draw sketch of a simple oil hydraulic circuit and write down the name and working function of each of the components used in it. S2015 4

10 State any four merits and any four limitations of hydraulic system. S2015 4

11 List any four desirable properties of hydraulic oil used in hydraulic system. W2015 4

12 Give merits and demerits of hydraulic system. W2015 413 Enlist any four applications of oil hydraulic system. S2016 414 Enlist the desirable properties of oil used in hydraulic system. S2016 415 Write any four applications of oil hydraulic system. W2016 416 Write any four advantages of oil hydraulic system. W2016 4

1


Assignment No. 2Pumps

Sr. No.

Question Exam Marks

1 Describe construction and working of External gear pump with a neat sketch.

Sample Paper G Scheme 4

2 Draw symbol of, Unidirectional hydraulic pump. Sample Paper G Scheme 1

3 Describe the construction and working of radial piston pump. Sample Paper G Scheme 6

4 Describe with neat sketch working of variable displacement vane type pump and also draw symbol.


5 Give the classification of rotary pumps. Explain why only rotary pumps are preferred for oil hydraulic systems. S2014 4

6 With a neat sketch, explain the functioning of lobe pump. Give any four advantages of gear pumps S2014 4

7 Give the classification of positive displacement pump. W2014 48 Write the causes and remedies for the following

i) Excessive heat in oilii) Noisy pumpiii) Low pressure in system.

W2014 4

9 Explain working of axial piston pump with neat sketch. W2014 410 Explain gerotor pump with neat sketch. W2014 411 Draw symbols of 1) Unidirectional hydraulic pump S2015 212 Explain construction and working principle of Internal Gear

pump.S2015 4

13 Sketch and explain working of Gerotor pump used in hydraulic circuits. S2015 4

14 Explain with sketch swash plate Axial piston pump. S2015 415 State the importance of pump used in hydraulic system. Give

its classification. W2015 4

16 Differentiate between gear pump and piston pump on the basis of function, construction, pressure range and delivery of oil. W2015 4

17 Explain vain type pump with neat sketch. W2015 618 Sketch and explain gerotor pump. W2015 419 What are the selection criteria for hydraulic pumps? W2015 420 Explain with neat sketch the construction and working of gear

pump.S2016 6

21 Explain with neat sketch the construction of gerotor pump. S2016 422 What is swash plate? What is its use? What will happen if we

change the angle of swash plate? Explain with sketch W2016 8

23 Draw symbols of Unidirectional fixed displacement pump. W2016 424 Explain construction and working of gear pump. W2016 4

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Assignment No. 3Valves

Sr. No.

Question Exam Marks

1 Draw & describe working of Direct operated pressure relief valve.

Sample Paper

G Scheme4

2 Draw symbol of ,i) Variable flow control valve with integral check valve, ii) Pressure relief valve

Sample Paper

G Scheme2

3 State the methods of actuation and represent it symbolically.

Sample Paper

G Scheme4

4 State different types of flow control valve and describe any one with neat sketch.

Sample Paper

G Scheme4

5 Describe construction and working of pressure reducing valve with line sketch.

Sample Paper

G Scheme4

6 With a neat sketch describe pressure compensated flow control valve. Also show symbol of the same.

Sample Paper

G Scheme6

7 Give classification of DC valve on following basis,i) Actuation, ii) Port and position

Sample Paper

G Scheme4

8 Give one function of filter, oil seal, accumulator and pressure relief valve used in hydraulic circuit.

Sample Paper

G Scheme1

9 From the given component answer the following question.

i) Write the name of shown component.ii) Name the parts denoted by arrow.iii) Give its application.iv) Draw the symbol

Sample Paper

G Scheme4

10 Draw symbol ofi) Temperature and pressure compensated flow control valve ii) Pressure relief valve, iii) Pedal operated 4/3 DC valve.

Sample Paper

G Scheme3

11 With a neat sketch, explain the functioning of simple pressure relief valve. S2014 4

12 Sketch the two positions of 4/2 rotary spool type DCV and explain in brief. S2014 4

3


13 Draw the symbols of the following:i) Pressure compensated flow control valve.ii) Flow divideriii) 4/2 direction control valve.

W2014 4

14 Differentiate between pressure relief valve and pressure reducing valve with respect to its function, symbol, normal position, and operated element.

W2014 4

15 Give the classification of D. C. (Direction Control) valve with respect to following points.i) Valve element used in constructionii) Number of ports and positions.iii) Methods of actuation / operation.

W2014 4

16 Explain the working of pressure compensated flow control valve used in hydraulic system. W2014 4

17 Draw symbols of Pilot operated check valve and Sequence valve S2015 2

18 Draw sketch of needle valve and explain its working. S2015 419 Describe with sketch pressure compensated flow control

valve. S2015 4

20 Explain construction and working principle of Rotary Spool type DC valve with sketch. S2015 4

21 Draw symbol of Pilot operated pressure relief valve and Pedal operated 4/3 DC valve W2015 4

22 Explain with neat sketches working of rotary spool type DC valve.

23 Describe construction and working of pressure reducing valve. W2015 4

24 With a neat sketch, explain pressure operated flow control valve. Draw the symbol for the same. W2015 4

25 Draw neat sketch of 4/2 valve. Explain its working. S2016 426 Enlist any four sources of heat generation in hydraulic

system. S2016 4

27 Draw symbols of: 1) 4/3 direction control valve 2) Pilot operated pressure relief valve 3) Sequence valve

S2016 6

28 State the functions of pressure relief valve for pneumatic system. Explain its working with neat sketch. S2016 4

29 State advantages and disadvantages of poppet type directional control valve. S2016 4

30 Classify flow control valves with their application. S2016 431 Draw the symbol:

(i) unloading valve (ii) simple check valve

S2016 4

32 Explain with neat sketch the working of rotary spool type DC valve. W2016 6

4


33 Why pressure relief valve is used in hydraulic circuit? Explain in details with neat sketches. W2016 8

34 What is the use of direction control valve? Explain with sketch. W2016 4

Assignment No. 4Actuators

Sr. No.

Question Exam Marks

1. Classify Hydraulic actuators. Sample Paper G Scheme 3

2. State mounting methods for actuators. Sample Paper G Scheme 3

3. Why cushioning is provided in linear actuator? Draw symbol of double acting cylinder with cushioning on both ends.


4. What is Tandem cylinder? What is its beneficial property? Explain with sketch and draw its symbol. S2015 4

5. Classify hydraulic actuators. W2015 46. Explain working of telescopic cylinder with neat sketch. W2015 47. State the functions of actuator S2016 28. Explain with sketch the working of double acting cylinder. S2016 89. Compare linear actuators and rotary actuators. W2016 610. Draw symbol of any three types of Hydraulic motors. W2016 4

5


Assignment No. 5 (Accessories)

Sr. No.

Question Exam Marks

1 State types of oil seals and give at least two uses each in hydraulic circuit.

Sample G Scheme 4

2 Classify accumulators and state their functions. Sample G Scheme 4

3 What is the use of filter in Hydraulic circuit. Describe proportional flow filter with a neat sketch.

Sample G Scheme 4

4 Why cushioning is provided in linear actuator? Draw symbol of double acting cylinder with cushioning on both ends.

Sample G Scheme 3

5 Give one function of filter, oil seal, and accumulator used in hydraulic circuit.

Sample G Scheme 3

6 List the function of followingi) Oil Sealii) Accumulatoriii) Heat exchanger

W2014 4

7 Give the functions of hydraulic seals. Differentiate between static seal and dynamic seal. S2014 4

8 State any four functions of hydraulic seals and state any four reasons for seal failure. S2015 4

9 State the function of Accumulator in circuit? State different types of accumulator and explain any one with sketch.

S2015 6

10 Give classification of filters used in hydraulic system. Explain any one of them. W2015 4

11 What is the function of hydraulic accumulator? How they are classified? Explain any one with suitable sketch. W2015 6

12 State any four reasons of failure of hydraulic seals. W2015 413 State the functions of filter S2016 214 Why accumulators are used in hydraulic circuits?

Explain any one of them with sketch. S2016 4

15 What is hose? Enlist factors affecting on selection of hose in hydraulic system. State different layers of hose. S2016 8

16 What are the various materials used for pipes in hydraulic circuit? S2016 4

17 Enlist the factors to be considered for selection of seal. What are the main causes of seal failure? S2016 6

18 What are the effects of contaminants in the oil? W2016 219 Draw symbols of:

(i) Oil reservoir (ii) Oil filter (iii) Heat exchanger W2016 3

20 In cold climate why oil tank is equipped with oil heaters? Explain. W2016 4

6


Assignment No. 6Hydraulic Circuits

Sr. No.

Question Exam Marks

1 Draw Bleed off circuit and label all the components. Sample Paper G Scheme 3

2 Suggest and draw circuit for linear speed control during positive load.


3 Describe how speed of cutting stroke of shaper machine is regulated with neat labeled sketch.


4 Using DA cylinder, flow control valve with check valve, pressure relief valve, filter, DC valve develop a circuit for speed control during a return stroke.


5 Draw labeled meter in circuit and describe its operation. Sample Paper G Scheme 4

6 Sketch and explain “meter-in hydraulic circuit” to control the speed of extension of DAC. Explain why meter-in circuit is not preferred for over-running loads.

S2014 8

7 With the help of neat circuit diagram, explain the functioning of hydraulic shaper. S2014 8

8 Draw hydraulic circuit for a punch press. Explain how the use of unloading valve can save power. If pressure settings of relief valve and unloading valve are 500 bar and 5 bar respectively, and pump discharge is 0.04 m3/sec,Calculate :i) Power consumption without unloading valve in circuitii) Power consumption with unloading valve in circuitiii) Percentage saving in power by adopting unloading valve.(Take 1 bar = 105 N/m2 )

S2014 8

9 Draw sketch of a simple oil hydraulic circuit and write down the name and working function of each of the components used in it.

S2015 4

10 Compare meter-in circuit with meter-out circuit with respect to well labeled diagram, working, features, advantages, limitations and applications.

W2014 4

11 Explain with neat sketch the working of hydraulic circuit used for milling machine. W2014 4

12 Explain with neat sketch the working of motion synchronization circuit with the help of flow divider, to control the movement of two double acting cylinders.

W2014 4

13 Draw and explain working of Bleed-off hydraulic circuit. S2015 814 Draw and label the components in meter - in hydraulic

circuit. S2015 4

15 Explain with neat sketch working of hydraulic circuit for shaping machine. W2015 8

16 Using double acting cylinder, flow control valve with check valve, pressure relief valve, filter and DC valve, develop a circuit for speed control during a return stroke.

W2015 8

17 Explain with neat sketch the working of hydraulic circuit for shaping machine. S2016 8

7


18 Explain with neat sketch the working and applications of meter-in hydraulic circuit. S2016 4

19 Draw pilot operated DA cylinder circuit using 4 X 2 DC valve and 3 X 2 pilot valve. W2016 4

20 Draw the hydraulic circuit showing control of DA cylinder. Using 4 × 2 DC valve. Explain the working in brief.

W2016 4

21 Draw actual hydraulic system and explain its working. W2016 622 Explain the principle of regenerative circuit. W2016 423 Draw bleed off circuit and label it. W2016 424 Compare meter in circuit and meter out circuit. W2016 425 Draw the hydraulic circuit for shaping machine. Explain

its working. W2016 4

8


Assignment No. 7Introduction to Pneumatic Systems

Sr. No.

Question Exam Marks

1 Differentiate between Hydraulic and Pneumatic circuit with respect to the following parameter.i) Medium, ii) Pressure, iii) Application, iv) Lubrication.

Sample G Scheme 4

2 State merits and limitation of pneumatic system. Sample G Scheme 3

3 Rearrange the following component and draw block diagram of general pneumatic system.i) Flow Control Valve, ii) Compressor, iii) Direction Control Valve, iv) FRL Unit, v) Actuator, vi) Muffler

Sample G Scheme 4

4 List the various components of pneumatic circuit and give its application.

Sample G Scheme 4

5 What are the advantages and disadvantages of pneumatic system? W2014 4

6 Draw general layout of pneumatic system and label the components. S2014 4

7 List any three merits and three demerits of pneumatic systems with reasoning. S2014 6

8 Draw a general layout and symbolic representation of pneumatic system. W2015 4

9 Write any four limitations of pneumatic system. W2015 410 State any four advantages and disadvantages of

pneumatic system. S2016 4

11 What are the features of air? List any four features. S2016 412 Draw general layout of pneumatic system. S2016 413 Draw a general layout of pneumatic system and state the

function of components. W2016 4

14 What are the limitations of pneumatic system? W2016 4

9


Assignment No. 8Compressor

Sr. No.

Question Exam Marks

1 State types of air compressor and describe vane type air compressor.

Sample G Scheme 4

2 Give the classification of air compressors. W2014 43 Give detailed classification of air compressors. S2014 44 Define F.A.D. of an air compressor. If an air compressor is

delivering 0.15 m3/min of compressed air at 12 bar pressure, calculate F.A.D.

S2014 4

5 With a neat sketch, explain the functioning of liquid ring vane compressor. S2014 6

6 Write construction and working of double acting reciprocating compressor with neat sketch. S2015 4

7 Explain reciprocating compressor used in pneumatic system. W2015 4

8 Draw a neat sketch of two stage air compressor and label it’s parts. W2015 4

9 Explain the construction and working of doubled acting reciprocating compressor with neat sketch. W2016 8

10


Assignment No. 9Control Valves of Pneumatic System

Sr. No.

Question Exam Marks

1 Draw symbol of 5/3 DCV Sample Paper

G Scheme1

2 Describe pressure regulating valve with neat sketch. Sample Paper

G Scheme4

3 Draw the symbols of the followingi) 3/2 d. C. valve ii) Shuttle valve W2014 4

4 Explain the quick exhaust valve. W2014 45 Explain shuttle valve with neat sketch. W2014 46 Explain non-return type flow control valve used in

pneumatic system, with neat sketch. W2014 4

7 Explain the working of push button operated 5/2 D. C. valve used in pneumatics, with neat sketch and its symbol. W2014 4

8 Explain pressure relief valve used in pneumatic system. W2014 49 What are the main three types of control valves ? Give the

purpose of each of them in pneumatic systems. S2014 4

10 Explain why 4/2 DCV is preferred for hydraulic systems and 5/2 DCV for pneumatic system. S2014 4

11 Sketch the two positions of sliding spool type 3/2 DCV and explain in brief. S2014 6

12 Sketch and explain working of 5/2 DC pneumatic valve.P S2015 4

13 Draw a neat sketch of working of push button operated 5 × 2 DC valve used in pneumatic system. W2015 4

14 What are the different types of pressure regulator? Explain any one of them with neat sketch. S2016 8

15 What is the use of direction control valve? Explain with sketch. W2016 4

16 Draw symbol of:1) 2 × 2 DC valve2) Fixed type flow control valve3) Pressured relief valve.

W2016 4

17 Explain working of directly operated (Poppet type) check valve with neat sketch. W2016 4

11


Assignment No. 10Actuators of Pneumatic System

Sr. No.

Question Exam Marks

1 With neat sketch describe construction and working of pneumatic DA cylinder.

Sample G Scheme 4

2 Classify pneumatic actuators on the basis of i) Motion ii) Mode of action iii) Displacement and describe telescopic cylinder with sketch.

Sample G Scheme 8

3 Differentiate air motor with electric motor and hydraulic motor with respect to its function, symbol, normal position and operated element.

W2014 4

4 Give the classification of air motors and explain any one of it. W2014 4

5 Draw detailed symbol of F R L unit and time delay valve. S2014 46 With neat sketch describe construction and working of

pneumatic DA cylinder. S2015 4

7 Classify pneumatic actuators on the basis of:(i) Motion(ii) Mode of action(iii) Displacement and(iv) Describe telescopic cylinder with sketch

S2015 8

8 Explain with sketch any one type of air motor. W2015 49 Compare pneumatic motor with electric motor. W2015 410 Explain with neat sketch, working of double acting air

cylinder. W2015 4

11 What is the meaning of unidirectional air motor and bi directional air motor? Explain with sketch and draw symbol of both.

W2016 4

12


Assignment No. 11Accessories of Pneumatic System

Sr. No.

Question Exam Marks

1 Draw symbol of FRL unit and state function of each element in it.

Scheme, G Scheme 4

2 Give the function of FRL unit and also draw its symbol. Scheme, G Scheme 4

3 Describe with neat sketch construction and working of pneumatic hose.

Scheme, G Scheme 4

4 List the factors to be considered for selecting the pipes while designing the pneumatic system. W2014 4

5 Explain function of FRL unit with neat sketch. W2014 46 Draw the symbols of

i) Mufler ii) Air receiver W2014 4

7 Explain the working of pressure regulator with neat sketch. W2014 48 Enlist the problems encountered due to moisture

condensation in pneumatic systems. Name the different types of air dryers used to avoid moisturecondensation.

S2014 6

9 State the various losses in pipes in pneumatic system. W2015 410 Sketch and label construction details of air receiver of

pneumatic system. S2015 4

11 Sketch and label construction details of pneumatic hose. S2015 412 What is FRL unit? Explain its function with the help of

sketch. Draw separate and combined symbol of FRL unit.

S2015 8

13 Explain what is ferrule fitting used in pneumatic circuits. S2015 414 Write any eight industrial applications of pneumatic

system. S2015 4

15 Give the function of FRL unit. Draw it’s symbol. W2015 416 What is FRL? State its importance. S2016 417 Draw constructional details of pneumatic hose. Why hose

is required in pneumatic circuits? W2016 4

18 Draw symbol of muffler W2016 2

13


Assignment No. 12Pneumatic Circuits

Sr. No.

Question Exam Marks

1. Draw time delay pneumatic circuit and label all the components.

Sample G Scheme 4

2. Develop a pneumatic circuit for speed control of linear actuator using 3/2 DC valve.

Sample G Scheme 4

3. State any two applications of 3 X 2 DC pneumatic valve with suitable circuit diagram.

Sample G Scheme 8

4. From a given circuit answer the following questionName the circuit and give its application.ii) Name the component represented by arrow.

i) Name the circuit and give its application.ii) Name the component represented by arrow.

Sample G Scheme 8

5. Develop a pneumatic circuit for operation of two DA cylinders such that one operates after other at a certain time interval using time delay valve.

Sample G Scheme 8

6. Describe with neat sketch how speed of bidirectional air motor is controlled.

Sample G Scheme 8

7. From the given pneumatic circuit answer the following question.

Sample G Scheme

4

14


i) Identify and draw missing part.ii) Name the circuit.iii) State the function of missing part (component).iv) If missing component is not added to the circuit state which circuit will be obtained.

8. Explain with neat sketch the working of equencing circuit for the two double acting air cylinders. W2014 4

9. What is time delay circuit? Explain any one time delay circuit. W2014 4

10. Explain pneumatic circuit for controlling speed of Double Acting Cylinder with circuit diagram W2014 4

11. Draw throttling-out (meter-out) pneumatic circuit to control the speed of retraction of DAC. Explain in brief. S2014 8

12. Draw a pneumatic circuit to operate a DAC using two 3/2 spring return type DCV. No other DCV should be used in the circuit. Explain in brief and state the application of this circuit.

S2014 8

13. Draw time delay valve circuit and explain in brief. State the application of this circuit. S2014 8

14. From a given circuit answer the following questions. S2015 4

15


1) Name the circuit and give its application.2) Name the components represented by arrow.

15. What is sequencing operation? How will you sequence on DA pneumatic cylinder and one SA pneumatic cylinder using roller operated DC valve? Explain with circuit.

S2015 8

16. Sketch time delay pneumatic circuit and explain working of it. S2015 4

17. Draw and label the circuit for working of two double acting air cylinders. W2015 4

18. Develop a pneumatic circuit for operation of two DA cylinders such that one operates after other at a certain time interval using time delay valve.

W2015 8

19. Describe with a neat sketch, how speed of bidirectional air motor is controlled. W2015 4

20. What is impulse pneumatic circuit? Explain. W2015 421. Sketch and explain speed control of bi-directional air

motor in pneumatics. S2016 4

22. Explain time delay pneumatic circuit with neat sketch. S2016 423. What is meant by impulse circuit? Draw its circuit

diagram. S2016 8

24. Explain actuated position of control of single acting cylinder with neat circuit. S2016 4

25. Draw pilot operated DA cylinder circuit using 4 × 2 DC valve and 3 × 2 pilot valve.

W2016 4

26. What is impulse circuit? Explain. W2016 827. How can the speed control of any actuator be achieved?

Explain the speed control circuit of bi directional air motor with sketch.

W2016 4

16


Question bank for Skill Test of subject Industrial Fluid Power (TYME)

A) Each question contains 2 marks.

1) Draw the symbol of a service unit.

2) Draw a symbol of bidirectional fixed displacement pneumatic motor

3) Draw a symbol of bidirectional variable displacement pneumatic motor

4) Draw a symbol of check valve.

5) Draw a symbol of single acting cylinder with spring.

6) Draw symbol of filter.

7) Draw a symbol of fixed displacement of pump.

8) Draw a symbol of orifice.

9) Draw a symbol of pressure & temperature compensated flow control valve.

10) What is meant by positive load?

11) What is meant by negative load?

12) What is principle of hydraulic pump.

13) State two applications of meter-in-circuit.

14) State two applications of meter-out-circuit.

15) What is function of FRL unit.

16) List two function of pressure relief valve.

17) List two function of pressure reducing valve.

18) List two function of sequence valve.

B) Each question contains 6 marks

1) Draw a hydraulic circuit for meter-in-circuit.

2) Draw a hydraulic circuit for meter-out-circuit.

3) Draw a hydraulic circuit for sequence circuit.

4) Draw a pneumatic circuit for single acting cylinder.

5) Draw a pneumatic circuit for double acting cylinder.

6) Draw a pneumatic circuit for speed control of double acting cylinder.

7) Write any 6 applications of hydraulic system.

8) Write any 6 applications of pneumatic system.

9) Write any 6 advantages of hydraulic system.

17

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