The discharge through a rectangular channel will be maximum. if its depth is_______________?
Correct answer: A. Half of its width
- A. Half of its width
- B. Equal to its width
- C. Twice the width
- D. one-third of its with
Explanation
For the most economical rectangular channel, the width is twice the depth, so the depth is half the width. This condition maximizes hydraulic radius and therefore discharge for the relevant fixed-area design.
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