Critical Velocity NEET Questions

Physics - Properties of Solids and Liquids

Critical Velocity MCQ Questions


7.
The critical velocity of water flowing through a pipe decreases when:
A.
The diameter of the pipe increases
B.
The fluid viscosity increases
C.
The fluid density decreases
D.
The temperature increases
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ANSWER :
B. The fluid viscosity increases
8.
Which of the following is an application of critical velocity in industries?
A.
Calculating electric resistance
B.
Measuring the pH of solutions
C.
Design of pipelines to avoid turbulence
D.
Determining light intensity
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ANSWER :
C. Design of pipelines to avoid turbulence
9.
Which factor does not affect the critical velocity of a fluid?
A.
Diameter of the pipe
B.
Viscosity of the fluid
C.
Color of the fluid
D.
Density of the fluid
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ANSWER :
C. Color of the fluid
10.
What happens to the flow of a fluid when the velocity is lower than the critical velocity?
A.
The flow is chaotic
B.
The flow becomes turbulent
C.
The flow remains laminar
D.
The flow stops completely
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ANSWER :
C. The flow remains laminar
11.
When critical velocity is exceeded, the nature of the fluid flow changes to:
A.
Stationary
B.
Laminar
C.
Uniform
D.
Turbulent
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ANSWER :
D. Turbulent
12.
The Reynolds number is a dimensionless quantity used to predict:
A.
The density of the fluid
B.
The temperature of the fluid
C.
The color of the fluid
D.
The type of fluid flow
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ANSWER :
D. The type of fluid flow