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Irrigation - Engineering

Q1:

For designing the venturi head,

A width of the throat should not be less than one-third of the bed width of main canal

B width of the throat should not be less than the width obtained from the formula B = Q / 1.2d3/2, where d is the difference in levels of F.S.L. and sill

C minimum throat width should not be less than 60 cm

D length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal

E all the above.

ANS:E - all the above.

What should be the ratio of convergent part to throat?