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Irrigation Engineering

Irrigation Engineering
Which of the following canal outlets maintains a constant discharge ?

rigid module
flexible outlet
None of these
non-modular outlet

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Irrigation Engineering
Horizontal acceleration due to earthquake results in

both (A) and (B)
hydrodynamic pressure
inertia force into the body of the dam
None of these

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Irrigation Engineering
According to Kennedy, the critical velocity (V₀) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).

V₀ = 0.84 mD0.64
V₀ = 0.55 mD0.54
V₀ = 0.55 mD0.64
V₀ = 0.84 mD0.54

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Irrigation Engineering
According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase

Surface slope of streams above the levied portion
Water surface elevation during floods
Rate of flood wave
Maximum discharge

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

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

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Irrigation Engineering
In a canal syphon, the flow is

Pipe flow
Under atmospheric pressure
Under negative pressure
With critical velocity

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