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In a circular sewer of dia D, if the depth of flow is D/4, the wetted perimeter will be equal to
  • a)
    πD/4
  • b)
    πD/2
  • c)
    πD/3
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?
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In a circular sewer of dia D, if the depth of flow is D/4, the wetted ...

Proportionate perimeter:
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In a circular sewer of dia D, if the depth of flow is D/4, the wetted ...
ΠD/2
b) πD/4
c) πD
d) 2πD

The correct answer is c) πD.

Explanation:
The wetted perimeter is the length of the portion of the circular sewer that is in contact with the flowing liquid. In this case, the depth of flow is D/4, which means that the liquid is filling up one-fourth of the circular cross-section.

Therefore, the wetted perimeter will be the circumference of the circle at the point where the liquid touches the circular sewer. This circumference can be calculated using the formula C = πD, where D is the diameter of the circle.

Hence, the wetted perimeter is equal to πD.
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In a circular sewer of dia D, if the depth of flow is D/4, the wetted perimeter will be equal toa)πD/4b)πD/2c)πD/3d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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