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Irrigation Engineering

Irrigation Engineering
The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by

7RS
15 RS
11RS
4RS

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Irrigation Engineering
The length and width of a meander and also the width of the river, vary roughly as

Cube of the discharge
Square of the discharge
Square root of the discharge
Discharge

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Irrigation Engineering
The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is

1.074
1.084
1.054
1.064

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Irrigation Engineering
Finally formed berms in canals are provided for

Protection of banks erosion by the waves
All of these
Strengthening of banks
Control of seepage losses

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Irrigation Engineering
The ratio of the rate of change of discharge of an outlet and parent channel, is known as

Sensitivity
Efficiency
Flexibility
Modular limit

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Irrigation Engineering
Solution of Laplacian equation in three dimensions d²φ/dx² + d²φ/dy² + d²φ/dz² = 0 of water in a syphon, is done by

Method of relaxation
Analytical method
Khosla's method
Unwin's method

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