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

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Irrigation Engineering
The intensity of irrigation means

Percentage of gross commanded area to be irrigated annually
Percentage of culturable commanded area to be irrigated annually
Total depth of water supplied by the number of waterings
Percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually

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Irrigation Engineering
A counter berm is

A horizontal benching provided on the outside slope
A horizontal benching provided on the inside slope
A vertical benching provided on the inner edge of the bank
A vertical benching provided on the outer edge of the bank

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