Irrigation Water Resources Engineering - Interview Questions | Exam2Win

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36. If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be

A. 1 + (0.9)010

B. 1 - (0.9)�l0

C. 1/(1-0.9�10)

D. 1/(1+ 0.9010)

Explanation:

37. If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that

A. demand cannot be met by inflow

B. reservoir was not full at the beginning

C. both (a) and (b)

D. none of the above

Explanation:

38. A unit hydro graph has one unit of

A. rainfall duration

B. rainfall excess

C. time base of direct runoff

D. discharge

Explanation:

39. For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is

A. N/(m+l)

B. m/(N+l)

C. m/N

D. (N+l)/m

Explanation:

40. The shape of recession limb of a hydrograph depends upon

A. basin characteristics only

B. storm characteristics only

C. both (a) and (b)

D. none of the above

Explanation: