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Irrigation Engineering

Irrigation Engineering
The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

45°
60°
90°
30°

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Irrigation Engineering
Instantaneous unit hydrograph is a hydrograph of
i) unit duration
ii) unit rainfall excess
iii) infinitely small duration
iv) infinitely small rainfall excess
The correct answer is

(ii) and (iii)
(i) and (ii)
(i)and(iv)
(iii) and (iv)

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Irrigation Engineering
Which of the following can be used as a meter fall ?

All of these
vertical drop fall
unflumed glacis fall
flumed glacis fall

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

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Irrigation Engineering
The major resisting force in a gravity dam is

self-weight of dam
uplift pressure
wave pressure
water pressure

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Irrigation Engineering
The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to

2 to 3 m per second
1 to 2 m per second
4 to 5 m per second
3 to 4 m per second

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