The most economical section of a lined canal is

Question

Quizplus · Accepted Answer

The most economical section of a lined canal varies with the discharge it needs to handle. For small discharges, a triangular section with a circular bottom is often most efficient due to its ability to minimize the wetted perimeter, thus reducing friction. For higher discharges, a trapezoidal section with rounded corners is preferred as it balances the need for increased capacity with structural stability and efficient flow dynamics. Therefore, both (b) and (c) are correct.

The Most Economical Section of a Lined Canal Is