Irrigation Engineering
The intensity of irrigation means

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
Percentage of gross commanded area to be irrigated annually

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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 :

A is false but R is true
Both A and R are true and R is the correct explanation of A
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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Irrigation Engineering
For designing the venturi head,

Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
Minimum throat width should not be less than 60 cm
All listed here
Width of the throat should not be less than one-third of the bed width of main canal

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