Mechanical Engineering - Hydraulics and Fluid Mechanics

26. 

The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

A. directly
B. indirectly

Answer: Option B

Explanation:

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27. 

The mass per unit volume of a liquid at a standard temperature and pressure is called

A. specific weight
B. mass density
C. specific gravity
D. none of these

Answer: Option B

Explanation:

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28. 

The centre of pressure acts __________ the centre of gravity of immersed surface.

A. at
B. above
C. below

Answer: Option C

Explanation:

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29. 

A flow through an expanding tube at constant rate is called

A. steady uniform flow
B. steady non-uniform flow
C. unsteady uniform flow
D. unsteady non-uniform flow

Answer: Option B

Explanation:

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30. 

When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.

A. True
B. False

Answer: Option A

Explanation:

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