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Waste Water Engineering

Waste Water Engineering
The sewer that unloads the sewage at the point of treatment is called

House sewer
Branch sewer
Outfall sewer
Main sewer

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Waste Water Engineering
Sludge banks are formed if sewage is disposed of in

None of these
Lakes
Rivers
Seas

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Waste Water Engineering
For efficient working of a sewer, it must be ensured that

Both (A) and (B)
Neither (A) nor (B)
Minimum velocity of 0.45 m/sec, is maintained at its minimum flow
A maximum velocity of 0.90 m/sec, is maintained at its maximum flow

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Waste Water Engineering
A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

2.45 m
2.30 m
2.40 m
2.50 m

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Waste Water Engineering
A well oxidized sewage contains nitrogen mainly as

None of these
Free ammonia
Nitrites
Nitrates

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Waste Water Engineering
The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by

Bazin
William-Hazen
Crimp and Bruges
Kutter

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