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Irrigation Engineering

Irrigation Engineering
A fall which maintains its depth, is

All listed here
A rectangular notch fall
A trapezoidal notch fall
A low weir fall

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Irrigation Engineering
In a canal syphon, the flow is

With critical velocity
Under negative pressure
Pipe flow
Under atmospheric pressure

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Irrigation Engineering
The ratio of the rate of change of discharge of an outlet to the rate of change in level of water surface in a distributary at its normal depth, is known as

Flexibility
Efficiency
Modular limit
Sensitivity

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

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

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Irrigation Engineering
The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

20 m3/sec
25 m3/sec
30 m3/sec
35 m3/sec

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Irrigation Engineering
The net speed under which the turbine reaches its peak efficiency is called

operating speed
design speed
gross speed
rated speed

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