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Irrigation Engineering

Irrigation Engineering
The maximum permissible eccentricity for no tension at the base of a gravity dam is

B/6
B/3
B/4
B/2

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Irrigation Engineering
The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as

water use efficiency
water application efficiency
None of these
water conveyance efficiency

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Irrigation Engineering
The optimum depth of kor watering for a rice crop, is

23.0 cm
13.5 cm
17.5 cm
19.0 cm

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Irrigation Engineering
The value of Sodium Absorption Ratio for high sodium water lies between

0 to 10
10 to 18
26 to 34
18 to 26

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Irrigation Engineering
A minimum of 90 cm free board is provided if the discharge in the canal is between

Over 100 cumecs
30 to 33 cumecs
Over 60 cumecs
30 to 60 cumecs

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Irrigation Engineering
Regime conditions in a channel may occur if

Discharge is constant
Channel flows uniformly in incoherent alluvium as that transported in suspension
All listed here
Silt grade and silt charge are constant

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