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) For efficient working of a sewer, it must be ensured that Correct Answer Both (A) and (B) Bissoy MCQ Team Civil Engineering Waste Water Engineering