Question

What types of channel sections are usually adopted?

(a) Triangular and Circular channel

(b) Triangular and Trapezoidal channel

(c) Rectangular and Trapezoidal channel

(d) Rectangular and Triangular channel

I got this question in final exam.

I would like to ask this question from Channel Cross-sections topic in division Lining of Irrigation Canals and its Economics of Irrigation Engineering

Answer 1

Correct option is (b) Triangular and Trapezoidal channel

To explain I would say: Generally, Triangular and Trapezoidal channel sections are adopted. For smaller discharges, the Triangular channel section is adopted and trapezoidal channel for larger discharges.