Civil Engineering MCQAE Level Civil Engineering
The probability that a flood of return period T will be equalled or exceeded at least once in n years is:
HydrologyWater Resources Engineering and IrrigationHARD
Choose the correct answer
A
n/T only for all cases
B
(1 - 1/T)^n
C
T/n
D
1 - (1 - 1/T)^n
Correct Answer
D. 1 - (1 - 1/T)^n
Why is this the answer?
Annual exceedance probability is 1/T; the risk over n independent years is 1 - (1 - 1/T)^n.
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