Civil Engineering - Hydraulics

21. 

A cylinder 3 m in diameter and 4 m long retains water one side as shown in the below figure. If the weight of the cylinder is 2000 kgf, the horizontal reaction at B is

A. 10,000 kgf
B. 15,000 kgf
C. 20,000 kgf
D. 18,000 kgf.

Answer: Option D

Explanation:

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22. 

Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)

A.
B.
C.
D.

Answer: Option D

Explanation:

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23. 

The momentum correction factor (β) for the viscous flow through a circular pipe is

A. 1.25
B. 1.33
C. 1.50
D. 1.66
E. 2.00

Answer: Option B

Explanation:

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24. 

A piezometer opening in pipes measures

A. velocity head
B. static pressure
C. total pressure
D. negative static pressure.

Answer: Option B

Explanation:

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25. 

An independent mass of a fluid does not posses

A. elevation energy
B. kinetic energy
C. pressure energy
D. none of these.

Answer: Option C

Explanation:

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