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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°
30°
90°

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Irrigation Engineering
Canals taken off from ice-fed perennial rivers, are known

Inundation canals
Ridge canals
Perennial canals
Permanent canals

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Irrigation Engineering
The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after

150 years
50 years
250 years
200 years

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Irrigation Engineering
The uplift pressure on the roof of an inverted syphon, is maximum when

Drain in running dry
Drain is running with H.F.L.
Canal is running with F.S.L.
Canal is running dry

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Irrigation Engineering
Which of the following spillways is least suitable for an earthen dam ?

shaft spillway
side channel spillway
chute spillway
ogee spillway

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Irrigation Engineering
Coefficient of discharge of an ogee spillway

depends on downstream apron interference and downstream submergence
remains constant
depends on depth of approach and upstream slope
both (A) and (B)

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