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Irrigation Engineering

Irrigation Engineering
The depth of rice root zone, is

90 cm
80 cm
60 cm
50 cm

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Irrigation Engineering
Groynes are generally built

Inclined downstream up to 30°
Perpendicular to the bank
All listed here
Inclined up stream up to 30°

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Irrigation Engineering
Infiltration is the

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

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Irrigation Engineering
For standing crops in undulating sandy fields, the best method of irrigation, is

Free flooding
Sprinkler irrigation
Check method
Furrow method

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Irrigation Engineering
A raingauge should preferably be fixed

in a closed space
under the tree
in an open space
near the building

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Irrigation Engineering
The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to

3 to 4 m per second
4 to 5 m per second
2 to 3 m per second
1 to 2 m per second

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