Mechanical Engineering - Hydraulics and Fluid Mechanics

21. 

The viscosity of a liquid __________ its rate of flow through a hole in a vessel.

A. effects
B. does not effect

Answer: Option A

Explanation:

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22. 

The formula for discharge over a sharp-crested weir and Ogee weir is same as that of a rectangular weir

A. Agree
B. Disagree

Answer: Option A

Explanation:

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23. 

The Cippoletti weir is a __________ weir.

A. rectangular
B. triangular
C. trapezoidal
D. circular

Answer: Option C

Explanation:

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24. 

When a body is placed over a liquid, it will float if

A. gravitational force is equal to the upthrust of the liquid
B. gravitational force is less than the upthrust of the liquid
C. gravitational force is more than the upthrust of the liquid
D. none of the above

Answer: Option A

Explanation:

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25. 

Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure.

A. plus
B. minus

Answer: Option B

Explanation:

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