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Irrigation Engineering

Irrigation Engineering
A river training work is generally required when the river is

All of these
Meandering
Degrading
Aggrading

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

during construction
sloughing of slope
sudden drawdown
steady seepage

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Irrigation Engineering
In a barrage, the crest level is kept

Low with no gates
High with large gates
High with no gates
Low with large gates

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Irrigation Engineering
The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as

water application efficiency
None of these
water use efficiency
water conveyance efficiency

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Irrigation Engineering
If average particle size of the silt in millimeters is m, the Lacey's silt factor f is proportional to

m2/3
m1/3
m1/2
m3

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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

2V²/5R
3V²/4R
2V²/√3 R
5V²/2R

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