Irrigation Engineering
If B and d are the bed width and depth of a channel in meters, the combined losses due to evaporation and seepage in cumecs per kilometer length of the channel, is

(1/50) × (B + d)2/3
(1/100) × (B + d)2/3
(1/150) × (B + d)2/3
(1/200) × (B + d)2/3

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

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