Mechanical Engineering - Hydraulics and Fluid Mechanics

31. 

According to Pascal's law, the intensity of pressure at any point in a fluid at rest is the same in all directions.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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32. 

The ratio of the inertia force to the surface tension force is called Weber's number.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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33. 

For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called

A. continuity equation
B. Bernoulli's equation
C. Pascal's law
D. Archimede's principle

Answer: Option B

Explanation:

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34. 

The buoyancy depends upon the

A. weight of the liquid displaced
B. pressure with which the liquid is displaced
C. viscosity of the liquid
D. compressibility of the liquid

Answer: Option A

Explanation:

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35. 

In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.

A. less than
B. more than

Answer: Option A

Explanation:

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