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Irrigation Engineering

Irrigation Engineering
The major resisting force in a gravity dam is

uplift pressure
water pressure
wave pressure
self-weight of dam

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Irrigation Engineering
If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle ? with horizontal, the hydraulic mean depth is

D
D/3
D/2
D/5

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Irrigation Engineering
The Lacey's regime velocity is proportional to

R1/2 S3/4
R3/4 S1/3
R2/3 S1/2
Q3/4 S1/3

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Irrigation Engineering
The state of the soil when plants fail to extract sufficient water for their requirements, is

Ultimate utilization point
None of these
Permanent wilting point
Maximum saturated point

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Irrigation Engineering
A hydraulic structure is designed to withstand

All of these
Hydraulic jump
Hydraulic pressure
Seepage forces

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Irrigation Engineering
The runoff increases with

increase in intensity of rain
increase in permeability of soil
increase in infiltration capacity
All of these

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