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Waste Water Engineering

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

1.15 D
1.25 D
1.5 D
1.75 D

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Waste Water Engineering
If the length of overland flow from the critical point to the mouth of drain is 13.58 km and difference in level between the critical point and drain mouth is 10 m, the inlet time is

2 hours
8 hours
6 hours
4 hours

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Waste Water Engineering
No treatment of the sewage is given if dilution factor is

More than 500
Between 150 to 200
Between 200 to 300
Less than 150

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Waste Water Engineering
The spacing of bars for perforations in coarse screens used for the treatment of sewage, is

50 mm
40 mm
30 mm
20 mm

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Waste Water Engineering
Setting out the alignments of sewers may start from

Out-fall
Tail end
Any point
City

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Waste Water Engineering
The gradient of sewers depends upon

All listed here
Velocity of flow
Discharge
Diameter of the sewer

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