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Waste Water Engineering

Waste Water Engineering
The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is

25 cm
40 cm
50 cm
20 cm

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.25 D
1.75 D
1.5 D
1.15 D

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Waste Water Engineering
The detention period for plain sedimentation water tanks, is usually

24 to 36 hours
16 to 24 hours
8 to 16 hours
4 to 8 hours

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Waste Water Engineering
The liquid wastes from kitchens, bath rooms and wash basins, is not called

Liquid waste
Sullage
None of these
Sewage

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Waste Water Engineering
The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is

1.5
2
3
4

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Waste Water Engineering
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of

140 cm
100 cm
120 cm
160 cm

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