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Waste Water Engineering

Waste Water Engineering
The most effective arrangement for diverting excess storm water into a natural drainage, is

Siphon spill way
Overflow weir
None of these
Leaping weir

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Waste Water Engineering
The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is

75 m
20 m
30 m
45 m

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Waste Water Engineering
In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is

2.65
2.25
2.5
2.55

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Waste Water Engineering
For trunk and out-fall, the type of sewers generally used, is

Circular shaped
Standard egg shaped
Parabolic shaped
Horse shoe shaped

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Waste Water Engineering
Large diameter sewers subjected to external pressure alone, are reinforced

Near the outer surface of the pipe
Near the inner surface of the pipe
With elliptical cage
Both A and B

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Waste Water Engineering
The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is

2
1.5
4
3

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