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Irrigation Engineering

Irrigation Engineering
If average particle size of the silt in millimeters is m, the Lacey's silt factor f is proportional to

m1/2
m1/3
m2/3
m3

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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)
R2 (θ + tan θ)
R (θ + cot θ)

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Irrigation Engineering
The sinuosity of a meander is the ratio of

Curved length and the straight distance
Meander length and the width of meander
None of these
Meander length and half width of the river

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Irrigation Engineering
The most suitable chemical which can be applied to the water surface for reducing evaporation is

Cetyl alcohol
Ethyl alcohol
Butyl alcohol
Methyl alcohol

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Irrigation Engineering
The level of the floor of a syphon aqueduct can be obtained

Both (a) and (b)
None of these
By subtracting the thickness of culvert plus the depth of the culvert from the canal bed level
By subtracting the depth of the culvert from the canal bed level

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Irrigation Engineering
Infiltration is the

both (A) and (B)
absorption of water by soil surface
movement of water through the soil
None of these

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