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Waste Water Engineering

Waste Water Engineering
For large sewers, maximum distance between manholes may be

200 m
300 m
100 m
50 m

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Waste Water Engineering
Bottom openings 15 cm × 15 cm in the standing baffle wall are provided

22.5 cm c/c
50 cm c/c
30 cm c/c
15 cm c/c

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Waste Water Engineering
In SI units the power of sound is represented in

Kgs
Watts
Joules
Newtons

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Waste Water Engineering
Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for

Under estimates of maximum and average flows
All of these
Unexpected increase in the population
Unexpected large scale infiltration of stream water

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Waste Water Engineering
pH value of sludge during alkaline regression stage, is

More than 7
Less than 7
Less than 6
More than 6

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Waste Water Engineering
‘Cowl’ is provided at

Lower end of ventilating column
Upper end of ventilating column
Upper end of the manhole
First step in manhole

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