Irrigation Engineering
Cross regulators in main canals are provided

None of these
To increase water head upstream when a main canal is running with low supplies
To regulate water supply in the distributaries
To overflow excessive flow water

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Irrigation Engineering
A divide wall is provided

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

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