1. Write the different designs of vane and gear pump.

2. Why gear pump cannot be used as variable displacement pump?

3. Write the two basic types of piston pump.

4. What is meant by semi-rotary actuator?

5. How will you avoid the impact of the moving piston in the hydraulic cylinder?

6. What is the advantage and disadvantage of tandem cylinder?

7. What is the function of an unloading valve?

8. How does a pilot operated check valve differ from a simple check valve?

9. Why is the operation of a screw pump quiet?

10. Name any four desirable characteristics of hydraulic pumps?

11. What are a positive displacement pump and a non-positive displacement pump?

12. Mention different types of pumps used in fluid power system?

13. List the factors to be considered in the pump selection?

14. Draw the pump characteristic curves for the positive displacement pump

15. How do you select hydraulic pipes for a hydraulic system?

PART B

16. i)Explain the factors which affect the selection of pumps and discuss in detail the classification

and performance features of different types of hydraulic pumps (10)

ii) Explain with a diagram the working of a telescopic cylinder (5)

17.a) With a neat sketch explain the principle construction working advantages of bent axis pump

and swash plate pump. (15)

(or)

b) Explain the different types of linear actuators and cylinder mounting with suitable sketch. (15)

1. What is a two way valve?

2. List any four types of pressure control valves

3. Differentiate between pressure reducing valve and pressure relief valve giving graphical symbol.

4. What are the different between pilot operated and direct operated pressure relief Valve.

5. Define the volumetric efficiency of a pump.

6. What is pressure compensated vane pump and how does it work?

7. What is the function of an unloading valve?

8. How does a pilot operated check valve differ from a simple check valve?

9. Why is the operation of a screw pump quiet?

10. Name any four desirable characteristics of hydraulic pumps?

11. What are a positive displacement pump and a non-positive displacement pump?

12. Mention different types of pumps used in fluid power system?

13. List the factors to be considered in the pump selection?

14. Draw the pump characteristic curves for the positive displacement pump

15. How do you select hydraulic pipes for a hydraulic system?

PART B – ( 2 x 15 = 30 Marks)Question No.16 is Compulsory

16. i) Explain the factors which affect the selection of pumps and discuss in detail the classification

and performance features of different types of hydraulic pumps (10)

ii) Explain with a diagram the working of a telescopic cylinder (5)

17.a) With a neat sketch explain the principle construction working advantages of bent axis pump

and radial piston pump. (15)

(or)

b) Explain the different types of actuators with suitable sketch. (15)