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The diameter of the sewer is 23cm. What should be the self cleansing velocity?

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The diameter of the sewer is 23cm. What should be the self cleansing velocity?

(a) 10cm/Sec

(b) 40cm/Sec

(c) 100cm/Sec

(d) 130cm/Sec

I have been asked this question during an interview.

This intriguing question originated from Minimum and Maximum Velocity of Flow in section Hydraulic Design of Sewers of Environmental Engineering

1 Answer

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Best answer
The correct option is (c) 100cm/Sec

Explanation: When the diameter of the sewer is between 15cm and 25cm, the self cleansing velocity is 100cm/Sec.

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