超星 - Chapter_3_Pumps - 查题吧

单选题

The swash plate axial piston pump changes the flow by changing__________. ()

A. speed
B. cylinder body swing angle
C. floating ring eccentricity
D. swash plate inclination angle

单选题

Piston pump is generally used in _______system. ()

A. high pressure
B. medium pressure
C. low pressure
D. none of above

单选题

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

单选题

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

单选题

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

A. radial piston pumps
B. axial piston pump
C. bent axis piston pump
D. all the above

单选题

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

单选题

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

单选题

In which of these pumps, swash plate is replaced by cylinder block?

A. bent axis piston pump
B. radial piston pump
C. axial piston pump
D. none of these

单选题

In a bent-axis piston pump, what happens when the angle between the drive shaft and the cylinder block is varied?

A. piston displacement cannot be varied
B. variable flow rate can be achieved
C. fixed flow rate can be achieved
D. all the above

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