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Waste Water Engineering

Waste Water Engineering
The water carried sewerage system removes

Storm sewage
Domestic sewage
All listed here
Industrial sewage

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Waste Water Engineering
If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is

None of these
1 in 120
1 in 100
1 in 60

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Waste Water Engineering
During preliminary treatment of a sewage

Floating materials are removed by screening
Girt and sand are removed by girt chambers
All listed here
Oil and grease are removed from skimming tanks

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Waste Water Engineering
To maintain aerobic biological activity, the moisture content of the compost mass should be about

0.55
0.45
0.6
0.5

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Waste Water Engineering
In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,

Is trebled
Is not enough
Is doubled
Is only provided

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Waste Water Engineering
The asbestos cement pipes are generally laid

At an angle of 60°
At an angle of 30°
Horizontally
Vertically

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