# 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.

Explanation:

No answer description available for this question. Let us discuss.

32.

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

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

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.

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

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. 