Correct option is A
CROSS-REGULATORS:- A cross-regulator Is provided on the main canal at the d/s of the off-take
to head up the water level and to enable the off-taking channel to draw the required supply.
Functions of CROSS-REGULATORS
1. The effective regulation of the whole canal system can be done with help of cross-regulator.
2. During the periods of low discharges in the parent channel, the cross-regulator raises water level of the u/s and feeds the off-take channel in rotation.
3. It helps in closing the supply to the d/s of the parent channels, for the purposes of repairs etc.
4. They help in absorbing fluctuation in various sections of the canal system. and in preventing the
possibilities of breaches in the tail reaches
5. Incidentally, bridges and other communication works can be combined with it.
