Irrigation Engineering
The most suitable location of a canal head work, is

Delta stage of the river
Trough stage of the river
Boulders stage of the river
Rock stage of the river

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Irrigation Engineering
An artesian aquifer is the one where

None of these
water surface under the ground is at atmospheric pressure
water table serves as upper surface of zone of saturation
water is under pressure between two impervious strata

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Irrigation Engineering
Lacy's regime condition is obtained if

Channel flows in unlimited, incoherent alluvium of the same character as that transported material
Discharge in the channel is variable
Silt grade in the channel is variable
Silt charge in the channel is variable

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