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Waste Water Engineering

Waste Water Engineering
The minimum diameter of sewer to be adopted is

10 cm
25 cm
15 cm
12.5 cm

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Waste Water Engineering
The most efficient cross-section of sewers in a combined sewerage system is

Rectangular
Parabolic
Circular
New egged

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Waste Water Engineering
The grit chambers of sewage treatment plants, are generally cleaned after

7 days
2 days
14 days
12 days

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

1.250 D
1.425 D
1.625 D
1.350 D

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Waste Water Engineering
For sewers, inverted siphon is provided for

Two pipes
Three pipes
Four pipes
One pipe

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Waste Water Engineering
The small sewers are cleaned by

Flushing
Wooden pills
None of these
Cane rodding

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