For efficient working of a sewer, it must be ensured that – McqOptions

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1.	For efficient working of a sewer, it must be ensured that
A.	minimum velocity of 0.45 m/sec, is maintained at its minimum flow
B.	a maximum velocity of 0.90 m/sec, is maintained at its maximum flow
C.	both (a) and (b)
D.	neither (a) nor (b).
Answer» D. neither (a) nor (b).

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