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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 | |