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Irrigation Engineering

Irrigation Engineering
If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is

1600
1500
1400
1700

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Irrigation Engineering
The most suitable material for the central impervious core of a zoned embankment type dam is

silty clay
coarse sand
clay
clay mixed with fine sand

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Irrigation Engineering
If B and d are the bed width and depth of a channel in meters, the combined losses due to evaporation and seepage in cumecs per kilometer length of the channel, is

(1/200) × (B + d)2/3
(1/50) × (B + d)2/3
(1/150) × (B + d)2/3
(1/100) × (B + d)2/3

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Irrigation Engineering
The ratio of the rate of change of discharge of an outlet and parent channel, is known as

Sensitivity
Flexibility
Modular limit
Efficiency

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Irrigation Engineering
Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?

independent of shape of water surface
flat water surface
convex water surface
concave water surface

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Irrigation Engineering
Useful soil moisture for plant growth, is

Gravity water
Chemical water
Hygroscopic water
Capillary water

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