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Irrigation Engineering

Irrigation Engineering
The water stored in the reservoir below the minimum pool level is called

valley storage
useful storage
surcharge storage
dead storage

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Irrigation Engineering
V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is

3V²/4R
5V²/2R
2V²/√3 R
2V²/5R

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Irrigation Engineering
Retrogression of the bed level of a river downstream a weir, occurs due to

Soft soil strata
Less percentage of silt
Increase of the bed level
Heavy impact of water

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Irrigation Engineering
For the upstream face of an earthen dam, the most adverse condition for stability of slope is

sloughing of slope
sudden drawdown
during construction
steady seepage

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Irrigation Engineering
A multipurpose reservoir is the one which is

designed for one purpose but serves more than one purpose
planned and constructed to serve various purposes
both (A) and (B)
None of these

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Irrigation Engineering
Side slopes generally kept for canals in loam soil, are:

1½ : 1 in cutting and 2 : 1 in filling
1 : 1 in cutting and 1½ : 1 in filling
Both (A) and (B)
Neither (A) nor (B)

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