Irrigation Engineering
If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

x = r2 d2
x = r1 d1
x = d2 / r2
x = d1 / r1

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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
A is true but R is false
Both A and R are true and R is the correct explanation of A
A is false but R is true

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