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Irrigation Engineering

Irrigation Engineering
A deficit of sediments in flowing water may cause a river

Degrading type
Sub-critical type
Aggrading type
Meandering type

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Irrigation Engineering
Coefficient of discharge of an ogee spillway

depends on downstream apron interference and downstream submergence
both (A) and (B)
depends on depth of approach and upstream slope
remains constant

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Irrigation Engineering
The net speed under which the turbine reaches its peak efficiency is called

operating speed
gross speed
design speed
rated speed

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Irrigation Engineering
If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is

R (θ + tan θ)
R2 (θ + cot θ)
R (θ + cot θ)
R2 (θ + tan θ)

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Irrigation Engineering
Attracting groynes are built

Inclined up stream
Perpendicular to the bank
Inclined down stream
None of these

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Irrigation Engineering
The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by

total rainfall
direct runoff volume
None of these
period of storm

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