Irrigation Engineering
A multipurpose reservoir is the one which is

None of these
both (A) and (B)
designed for one purpose but serves more than one purpose
planned and constructed to serve various purposes

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Irrigation Engineering
For a standing crop, the consumptive use of water is equal to the depth of water

Evaporated by the crop
Transpired by the crop
Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil
Transpired and evaporated by the crop

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Irrigation Engineering
For designing the venturi head,

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

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