In rigid module, the discharge A. Is independent of water levels in the distributary and water course B. Depends upon the water level in distributary C. Depends upon the water level in the water course D. Depends upon the water levels of both, i.e. distributary and water course

The correct answer is: D. Depends upon the water levels of both, i.e. distributary and water course

A rigid module is a type of irrigation system that uses a series of pipes to deliver water from a source to a field. The water level in the distributary and water course affects the discharge of the rigid module in the following ways:

• The water level in the distributary affects the pressure of the water in the pipe. The higher the water level, the higher the pressure. This higher pressure will cause more water to flow through the pipe.
• The water level in the water course affects the head of the water in the pipe. The head of the water is the difference in elevation between the water level in the pipe and the water level in the water course. The higher the head, the more water will flow through the pipe.

Therefore, the discharge of a rigid module depends upon the water levels of both the distributary and the water course.

Option A is incorrect because the discharge of a rigid module is not independent of the water levels in the distributary and water course.

Option B is incorrect because the discharge of a rigid module does not depend only upon the water level in the distributary.

Option C is incorrect because the discharge of a rigid module does not depend only upon the water level in the water course.