Irrigation Engineering
An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as

Non-modular outlet
Right modular outlet
Flexible modular outlet
Semi-modular outlet

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Irrigation Engineering
A divide wall is provided

At right angle to the axis of weir
Parallel to the axis of weir and upstream of it
Parallel to the axis of weir and downstream of it
At an inclination to the axis of weir

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