Civil Engineering - Water Supply Engineering

16. 

P0, P1, P2 be the populations of a city at times t0, t1 and t2 = 2t1, the saturation value of the population Ps of the city, is

A.
B.
C.
D.
E. None of these.

Answer: Option A

Explanation:

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17. 

Water supply system includes

A. digging a well for water
B. construction of dams
C. construction of canals
D. entire arrangement from source to distribution.

Answer: Option D

Explanation:

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18. 

Corrosion of a pipe

A. reduces its life span
B. reduces its carrying capacity
C. adds colour to water
D. adds odour to water
E. all the above.

Answer: Option E

Explanation:

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19. 

Most satisfactory formula for an estimate of fire demand Q for a city of population P in thousands for Indian conditions, is

A.
B. Q = 1640 P (1 - 0.01 P)
C. Q = 3180 P
D. none of these.

Answer: Option C

Explanation:

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20. 

Pick up the correct statement from the following :

A. Detention period for plain sedimentation tanks ranges between 4 to 8 hours
B. Detention period for sedimentation tanks, using coagulants usually ranges between 2 to 4 hours
C. The horizontally flow velocity in sedimentation tanks, is generally limited to 0.3 m/minute
D. All the above.

Answer: Option D

Explanation:

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