Civil Engineering - Water Resources Engineering

Exercise :: Water Resources Engineering - Section 1

31. 

The run off a drainage basin is

A. Initial recharge + ground water accretion + precipitation
B. Precipitation + ground water accretion + initial recharge
C. Precipitation - ground water accretion + initial recharge
D. Precipitation - ground water accretion - initial recharge.

Answer: Option D

Explanation:

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32. 

For computing the run off volumes of large areas, number of infiltrations used are

A. 2
B. 3
C. 4
D. 5

Answer: Option A

Explanation:

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33. 

From the Survey of India map, the distance of the critical point is 20 km and difference in elevation is 193 m. The over land flow time, is

A. 2 hours
B. 3 hours
C. 2 hours and 30 minutes
D. 3 hours and 30 minutes
E. 4 hours.

Answer: Option E

Explanation:

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34. 

If the area of storm hydrograph is equal to 102 cm, the ordinates of a unit hydrograph may be obtained by dividing the ordinates of the storm hydrograph by

A. 0.5
B. 1
C. 2
D. 3
E. 4

Answer: Option E

Explanation:

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35. 

If s is the potential infiltration, P is rainfall in cm in a drainage of a soil with fair pasture cover, the direct run off Q in cm is given by

A.
B.
C.
D.

Answer: Option C

Explanation:

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