The hydraulic mean depth for a circular pipe of diameter d is ____________________?
Correct answer: C. d/4
- A. d/2
- B. d/3
- C. d/4
- D. d/6
Explanation
Hydraulic mean depth here means hydraulic radius, equal to flow area divided by wetted perimeter. For a full circular pipe, (πd²/4)/(πd) simplifies to d/4.
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