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Irrigation Engineering

Irrigation Engineering
River training for depth is achieved by

construction of dykes or leavees
both (A) and (B)
groynes
groynes and bandalling

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Irrigation Engineering
The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called

net irrigation requirement
consumptive irrigation requirement
effective rainfall
consumptive use

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Irrigation Engineering
Canals constructed for draining off water from water logged areas, are known

Inundation canals
Valley canals
Contour canals
Drains

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Irrigation Engineering
According to Lacey, in regime conditions

Silt is kept in suspension by vertical components of eddies
Entire cross-section of the channel is generated at all points by the forces normal to the
Both (a) and (b)
Neither (a) nor (b)

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Irrigation Engineering
In a concrete canal the approximate permissible velocity of water should not exceed

1.5 m/sec
2 m/sec
1 m/sec
0.5 m/sec

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Irrigation Engineering
The shape of recession limb of a hydrograph depends upon

Basin characteristics only
Storm characteristics only
Both (A) and (B)
None of these

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