# Mechanical Engineering - Hydraulics and Fluid Mechanics

### Exercise :: Hydraulics and Fluid Mechanics - Section 3

11.

Which of the following statement is correct ?

 A. In a compressible flow, the volume of the flowing liquid changes during the flow. B. A flow in which the volume of the flowing liquid does not change, is called incompressible flow. C. When the particles rotate about their own axes while flowing, the flow is said to be rotational flow. D. all of the above

Explanation:

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12.

The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.

 A. Yes B. No

Explanation:

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13.

One stoke is equal to

 A. 10-2 m2/s B. 10-3 m2/s C. 10-4 m2/s D. 10-6 m2/s

Explanation:

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14.

The water hammer in pipes occurs due to sudden change in the velocity of flowing liquid

 A. Agree B. Disagree

Explanation:

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15.

A venturiflume is a flumed structure constructed across a channel by restricting its width.

 A. True B. False