A unit hydrograph is a hydrograph of a rain storm of a specified duration result

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Question
A unit hydrograph is a hydrograph of a rain storm of a specified duration resulting from a run-off of
Options
A. 15 mm
B. 20 mm
C. 25 mm
D. 30 mm.

Correct Answer

20 mm

Water Resources Engineering problems

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1. Pick up the correct statement from the following :
Options
A. The zone below water table, is called zone of saturation
B. The zone above water table, is called zone of aeration
C. The water which exists in the zone of saturation, is called ground water
D. Water in the zone of saturation, remains under hydrostatic pressure
E. All the above.

6. The average mean velocity of a stream having depth h, may be obtained by taking the average of the readings of a current meter at a depth of
Options
A. 0.1 h and 0.9 h
B. 0.2 h and 0.8 h
C. 0.3 h and 0.7 h
D. 0.4 h and 0.6 h.

10. Pick up the correct statement from the following :
Options
A. The intensity of rain is the rate at which it falls
B. The duration of rain is the time for which it falls with a given intensity
C. The frequency of rain is the number of times, if falls
D. All the above.

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