Explore topic-wise MCQs in Hydraulic Machines.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Hydraulic Machines knowledge and support exam preparation. Choose a topic below to get started.

1.

Decreasing the diameter of the eye of the impeller, cavitation _________

A. Increases
B. Decreases
C. Same
D. Independent
Answer» B. Decreases
2.

If we reduce the motor rpm in an impeller, cavitation _______

A. Increases
B. Decreases
C. Same
D. Independent
Answer» C. Same
3.

When we change the pump, the cavitation ______

A. Increases
B. Decreases
C. Same
D. Independent
Answer» C. Same
4.

Magnetic coupled pumps works via ________

A. Antiferromagnet
B. Drive magnet
C. Pump magnet
D. Ferromagnet
Answer» C. Pump magnet
5.

WHEN_WE_CHANGE_THE_PUMP,_THE_CAVITATION_______?$

A. Increases
B. Decreases
C. Same
D. Independent
Answer» C. Same
6.

Decreasing the diameter of the eye of the impeller, cavitation _________$

A. Increases
B. Decreases
C. Same
D. Independent
Answer» B. Decreases
7.

If_we_reduce_the_motor_rpm_in_an_impeller,_cavitation________$

A. Increases
B. Decreases
C. Same
D. Independent
Answer» C. Same
8.

There will be leakage only if there is ________

A. High pressure
B. High temperature
C. Froths are generated
D. Casing breakage
Answer» E.
9.

If we use an impeller inducer, we can reduce the cavitation in a centrifugal pump.

A. True
B. False
Answer» B. False
10.

Pump is always supported by bearings.

A. True
B. False
Answer» C.
11.

No gland is needed for the centrifugal pump.

A. True
B. False
Answer» B. False
12.

Magnetic coupled pumps works via _______?

A. Antiferromagnet
B. Drive magnet
C. Pump magnet
D. Ferromagnet
Answer» C. Pump magnet
13.

Magnetic coupled pumps are also called as _________

A. Series pumps
B. Parallel pumps
C. Froth pumps
D. Drive pumps
Answer» E.
14.

If we raise the liquid level in the suction vessel, cavitation ______

A. Increases
B. Decreases
C. Same
D. Independent
Answer» C. Same
15.

Centrifugal pumps work under the same principle, but differ in their _______

A. Working
B. Functions
C. Dimensions
D. Impeller
Answer» C. Dimensions
16.

Which among the following is not a centrifugal pump?

A. Sand pumps
B. Froth pumps
C. Slurry pumps
D. Energy pumps
Answer» E.
17.

If we lower the temperature, the water pump cavitation ________

A. Increases
B. Decreases
C. Same
D. Independent
Answer» C. Same
18.

For an oil field to have solid control, it needs _______

A. Draft tubes
B. Throttle bush
C. Stuffing box
D. Centrifugal pumps
Answer» E.
19.

The energy usage of a pump is determined by _______

A. Adiabatic expansion
B. Power required
C. Adiabatic compression
D. Isentropic expansion
Answer» C. Adiabatic compression