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
All listed here
Minimum throat width should not be less than 60 cm
Width of the throat should not be less than one-third of the bed width of main canal

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Irrigation Engineering
A deep well

both (A) and (B)
is weaker structurally than a shallow well
has more discharge than a shallow well
is always deeper than a shallow well

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

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