The best unit period of a unit hydrograph, is equal to basin lag divided by 2 3

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The best unit period of a unit hydrograph, is equal to basin lag divided by
Options
A. 2
B. 3
C. 4
D. 5

Correct Answer

4

Water Resources Engineering problems

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1. 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.

2. The cross sections of the beams of equal length are a circle and a square whose permissible bending stress are same under same maximum bending. The ratio of their flexural weights is,
Options
A. 1.118
B. 1.338
C. 1.228
D. 1.108

3. For a beam, if fundamental equations of statics are not sufficient to determine all the reactive forces at the supports, the structure is said to be
Options
A. determinate
B. statically determinate
C. statically indeterminate
D. none of these.

5. The rise of a parabolic arch at quarter points, is equal to
Options
A. times the rise of the crown
B. times the rise of the crown
C. times the rise of the crown
D. times the rise of the crown
E. times the rise of the crown.

6. 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.

9. 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.

10. 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.

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