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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
m2/3
m3
m1/3

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Irrigation Engineering
Optimum depth of kor watering for rice is

215 mm
165 mm
135 mm
190 mm

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Irrigation Engineering
V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is

5V²/2R
2V²/5R
3V²/4R
2V²/√3 R

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Irrigation Engineering
A land is known as waterlogged

capillary fringe reaches the root zone of plants
when gravity drainage has ceased
when the permanent wilting point is reached
None of these

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Irrigation Engineering
The difference in level between the top of a bank and supply level in a canal, is called

Free board
Berm
None of these
Height of bank

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Irrigation Engineering
Borrow pits should preferably be located in

Central half width of the section of the canal
Field on the left side of the canal
Fields on both sides of the canal
Field on the right side of the canal

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