# Hydraulic System and Components - 5 - MCQs with Answers

## Hydraulic System and Components – 5 – MCQs with Answers

1. What is the difference between vane pump and radial piston pump?

a. in radial piston pump, radial slots in vane pumps are replaced by radial bores which accommodate pistons
b. in radial piston pump, radial slots in vane pumps are replaced by radial bores which accommodate swash plate
c. in radial piston pump, radial slots in vane pumps are replaced by radial bores which accommodate both swash plate and pistons
d. none of the above

2. What is the advantage of multiple piston pump?

a. multiple piston pump do not have pulsating flow
b. multiple piston pump have pulsating flow which is required

ANSWER: a. multiple piston pump do not have pulsating flow

3. How many strokes does a single piston pump need to discharge oil?

a. one stroke
b. two strokes
c. three strokes
d. none of the above

4. How is the arrangement of pistons in piston pumps?

a. axially
c. both a and b
d. none of the above

ANSWER: c. both a and b

5. In which of these pumps, swash plate is used to translate the motion of rotating shaft into reciprocating motion?

b. axial piston pump
c. bent axis piston pump
d. all the above

6.Which factors are considered while designing a axial piston pump?

a. use of swash plate
b. application in open loop or closed loop circuit
c. design of bent axis piston pump
d. all the above

7. Angle of swash plate in axial piston pump is adjusted by

a. compensator
b. yoke
c. both a and b
d. none of the above

ANSWER: c. both a and b

8. In axial piston pump, the yoke is pushed away from cylinder block due to which,

a. yoke angle increases
b. swash plate angle decreases
c. both a and b
d. none of the above

9. When the angle of swash plate decreases

a. flow rate increases
b. flow rate decreases
c. flow rate does not depend on swash plate angle
d. none of the above

10. What will be the discharge of oil in axial piston pump, when the angle of swash plate is zero?

a. discharge of oil is maximum
b. discharge of oil is minimum
c. there is no discharge of oil
d. none of the above