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Irrigation Engineering

Irrigation Engineering
Which of the following canal outlets maintains a constant discharge ?

non-modular outlet
flexible outlet
None of these
rigid module

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Irrigation Engineering
Generally the weir is aligned at right angles to the direction of the main river current because

It gives better discharging capacity
It ensures less length of the weir
All of these
It is economical

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Irrigation Engineering
The main cause of meandering is

None of these
degradation
presence of an excessive bed slope in the river
the extra turbulence generated by the excess of river sediment during floods

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Irrigation Engineering
When surface of transpiration is submerged under water, then potential evapotranspiration is

much more than evapotranspiration
much less than evapotranspiration
equal to or less than evapotranspi-ration
equal to evapotranspiration

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Irrigation Engineering
The major resisting force in a gravity dam is

wave pressure
water pressure
uplift pressure
self-weight of dam

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Irrigation Engineering
For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of

rabi and kharif or sugarcane
rabi or kharif or sugarcane
rabi or kharif
rabi and sugarcane or kharif and sugarcane

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