Critical Velocity NEET Questions

Physics - Properties of Solids and Liquids

Critical Velocity MCQ Questions


13.
Which of the following conditions promotes laminar flow?
A.
High Reynolds number
B.
High fluid velocity
C.
High pipe diameter
D.
Low fluid velocity
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ANSWER :
D. Low fluid velocity
14.
Critical velocity in fluids is important in:
A.
Preventing erosion in pipelines
B.
Increasing friction in pipes
C.
Reducing the viscosity of fluids
D.
Changing the fluid's density
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ANSWER :
A. Preventing erosion in pipelines
15.
What is the critical velocity for a fluid with high viscosity and low density?
A.
Independent of viscosity
B.
Higher than a fluid with low viscosity
C.
Lower than a fluid with low viscosity and high density
D.
Directly proportional to fluid color
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ANSWER :
C. Lower than a fluid with low viscosity and high density
16.
The flow of blood in narrow capillaries remains laminar due to:
A.
High Reynolds number
B.
High velocity
C.
Low velocity and small diameter
D.
High density of blood
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ANSWER :
C. Low velocity and small diameter
17.
What is the effect of increasing the pipe diameter on critical velocity?
A.
Increases critical velocity
B.
Decreases critical velocity
C.
No effect
D.
Makes velocity zero
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ANSWER :
A. Increases critical velocity
18.
Which of the following best describes the relationship between viscosity and critical velocity?
A.
Inversely proportional
B.
Directly proportional
C.
Independent
D.
Exponential
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ANSWER :
A. Inversely proportional