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Irrigation Engineering

Irrigation Engineering
The water utilizable by plants is available in soils mainly in the form of

gravity water
chemical water
hydroscopic water
capillary water

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Irrigation Engineering
The difference in level between the top of a bank and supply level in a canal, is called

Height of bank
Berm
None of these
Free board

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Irrigation Engineering
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are

Parallel to weir crest in both
Parallel and at right angle to weir crest
At right angle to weir crest in both
At right angle and parallel to weir crest

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Irrigation Engineering
For wave action in dams, the maximum height of freeboard is generally taken to be equal to (where hw is height of wave.)

1.25 hw
1.50 hw
0.5 hw
0.75 hw

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Irrigation Engineering
Unit of runoff in M.K.S. system is

square metre
metre/sec
cubic metre/sec
cubic metre

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Irrigation Engineering
The scour depth D of a river during flood, may be calculated from the Lacey's equation

D = 0.47 (Q/f)
D = 0.47 (Q/f)2/3
D = 0.47 (Q/f)1/2
D = 0.47 (Q/f)1/3

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