Question

Lining decreases the channel capacity and consequently reduces the required channel section.

(a) True

(b) False

I got this question in an international level competition.

My question is from Advantages of Lining topic in section Lining of Irrigation Canals and its Economics of Irrigation Engineering

Answer 1

The correct choice is (b) False

To explain I would say: The lining causes less resistance to the flow of water as it provides a smooth surface and consequently velocity is more. The capacity can be considerably increased by lining the canal section. A lined channel will require fewer dimensions and less earthwork.