Irrigation Engineering
For designing the venturi head,

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
Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
All listed here

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Irrigation Engineering
Bligh's theory of seepage assumes

More weightage to horizontal creep than vertical creep
Loss of head follows the sine curve
Equal weightage to the horizontal and vertical creep
Less weightage to horizontal creep than vertical creep

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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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