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Irrigation Engineering

Irrigation Engineering
Which of the following methods of applying water may be used on rolling land ?

free flooding
furrow flooding
check flooding
boarder flooding

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Irrigation Engineering
Retrogression of the bed level of a river downstream a weir, occurs due to

Increase of the bed level
Less percentage of silt
Soft soil strata
Heavy impact of water

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Irrigation Engineering
For a flood control reservoir, the effective storage is equal to

useful storage + surcharge storage
useful storage + surcharge storage + valley storage
useful storage + surcharge storage -valley storage
useful storage – valley storage

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Irrigation Engineering
A river bend characterized by silting

silting on convex side
scouring on convex side and on concave side
scouring on concave side
scouring on concave side and silting on convex side

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Irrigation Engineering
The Lacey's regime velocity is proportional to

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

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Irrigation Engineering
A fall which maintains its depth, is

A trapezoidal notch fall
A low weir fall
A rectangular notch fall
All listed here

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