General Principles in the Working of Pressure Cooker NDA Questions

NDA Physics

General Principles in the Working of Pressure Cooker MCQ Questions


1.
The primary advantage of a pressure cooker is that it
A.
Cooks food more slowly
B.
Uses less water
C.
Cooks food more quickly
D.
Uses more energy
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ANSWER :
C. Cooks food more quickly
2.
The pressure inside a pressure cooker is
A.
Lower than atmospheric pressure
B.
Equal to atmospheric pressure
C.
Higher than atmospheric pressure
D.
Equal to vacuum pressure
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ANSWER :
C. Higher than atmospheric pressure
3.
The increase in boiling point inside a pressure cooker is due to
A.
Decreased pressure
B.
Increased pressure
C.
Decreased volume
D.
Increased volume
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ANSWER :
B. Increased pressure
4.
The main function of an impeller in a centrifugal pump is to
A.
Direct the flow
B.
Create pressure difference
C.
Increase the speed of liquid
D.
Separate impurities
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ANSWER :
C. Increase the speed of liquid
5.
A diaphragm pump is particularly useful for
A.
Handling viscous fluids
B.
High pressure applications
C.
Pumping clear water
D.
Continuous flow applications
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ANSWER :
A. Handling viscous fluids
6.
The purpose of a foot valve in a pump is to
A.
Increase pressure
B.
Prevent backflow
C.
Reduce friction
D.
Control flow rate
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ANSWER :
C. Reduce friction