Pick up the correct statement from the following : Normal annual rainfall is obt

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Question
Pick up the correct statement from the following :
Options
A.
B. Normal annual rainfall is obtained by taking the mean of the annual rainfall over a period of 35 years
C. Index of wetness gives an idea of the wetness of the year
D. If the rainfall in a year is approximately equal to the annual average value, the particular year is said to be an average year
E. All the above.

Correct Answer

All the above.

Water Resources Engineering problems

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3. The time required by rain water to reach the outlet of drainage basin, is generally called
Options
A. time of concentration
B. time of overland flow
C. concentration time of overland flow
D. duration of the rainfall
E. none of these.

5. The infiltration capacity during rain storm, is considerably reduced due to
Options
A. surface detention
B. soil moisture
C. compaction due to rain
D. washing of fine particles
E. all the above.

6. Pick up the correct statement from the following :
Options
A. Central portion of a cyclone acts as a chimney through which air gets lifted
B. Cyclonic precipitation caused by a warm front is generally continuous
C. Convective precipitation generally occurs in the form of showers of high intensity in short duration
D. Greatest amount of orographic precipitation falls in the windward side of the barrier
E. All the above.

9. Indian Meteorological department uses the standard gauges whose collectors have apertures of
Options
A. 50 or 100 sq. cm area
B. 100 or 150 sq. cm area
C. 100 or 200 sq. cm area
D. 250 or 500 sq. cm area.

10. While determining the yield of a gravity well by pumping, the depth of water table in two tests wells at distances r₁ and r₂ from the centre of the main well were found to be s₁ and s₂ respectively. Assuming the coefficient of transmissibility of the soil as T, the discharge Q may be given by
Options
A.
B.
C.
D.

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