Mechanical Engineering - Hydraulics and Fluid Mechanics

36. 

The coefficient of discharge for an external mouthpiece is

A. 0.375
B. 0.5
C. 0.707
D. 0.855

Answer: Option D

Explanation:

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37. 

A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

A.
B.
C.
D.

Answer: Option A

Explanation:

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38. 

A siphon is used to connect two reservoirs at different levels intervened by a high ridge.

A. True
B. False

Answer: Option A

Explanation:

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39. 

A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.

A. incompressible
B. compressible

Answer: Option A

Explanation:

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40. 

The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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