General Principles in the Working of Pumps NDA Questions

NDA Physics

General Principles in the Working of Pumps MCQ Questions


1.
The principle of operation for most mechanical pumps is
A.
Centrifugal force
B.
Hydraulic pressure
C.
Electromagnetic force
D.
Capillary action
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ANSWER :
B. Hydraulic pressure
2.
Which pump is commonly used to lift water from a well?
A.
Centrifugal pump
B.
Jet pump
C.
Submersible pump
D.
Reciprocating pump
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ANSWER :
C. Submersible pump
3.
The function of an impeller in a centrifugal pump is to
A.
Increase Pressure
B.
Decrease pressure
C.
Stabilize flow
D.
Decrease friction
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ANSWER :
A. Increase Pressure
4.
A diaphragm pump is used when
A.
High pressure is needed
B.
A fluid needs to be moved without contamination
C.
A fluid needs to be heated
D.
A fluid needs to be cooled
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ANSWER :
B. A fluid needs to be moved without contamination
5.
Self-priming pumps can
A.
Start pumping without manual priming
B.
Work at extremely high temperatures
C.
Operate without a fluid medium
D.
Function without a power source
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ANSWER :
A. Start pumping without manual priming
6.
In a centrifugal pump, the 'suction side' is where
A.
Fluid enters the pump
B.
Fluid exits the pump
C.
Pressure is highest
D.
Temperature is controlled
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ANSWER :
A. Fluid enters the pump