Irrigation Engineering
S-hydrograph is used to obtain unit hydrograph of

shorter duration from longer duration
None of these
longer duration from shorter duration
both (A) and (B)

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Irrigation Engineering
Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas.Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below :

Both A and R are true and R is the correct explanation of A
A is false but R is true
Both A and R are true but R is not the correct explanation of A
A is true but R is false

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