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

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

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Irrigation Engineering
If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

Total pressure on the surface is equal to ωx̅
Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅
All listed here
Depth of the centre of pressure is 2/3H vertically below the surface

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Irrigation Engineering
Lane's weighted creep theory assumes

Equal weightage to horizontal and vertical creeps
Double weightage to horizontal creep and one weightage to vertical creep
Triple weightage to horizontal creep and one weightage to vertical creep
Triple weightage to vertical creep and one weightage to horizontal creep

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