Mechanical Engineering - Hydraulics and Fluid Mechanics

21. 

The property of a liquid which controls its rate of flow is called viscosity.

A. True
B. False

Answer: Option A

Explanation:

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22. 

The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

A. 0.0116 stoke
B. 0.116 stoke
C. 0.0611 stoke
D. 0.611 stoke

Answer: Option A

Explanation:

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23. 

The factional resistance of a pipe varies approximately with __________ of the liquid.

A. pressure
B. velocity
C. square of velocity
D. cube of velocity

Answer: Option C

Explanation:

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24. 

If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

A. 0.417 H5/2
B. 1.417 H5/2
C. 4.171 H5/2
D. 7.141 H5/2

Answer: Option B

Explanation:

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25. 

According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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