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Waste Water Engineering

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

1.350 D
1.625 D
1.250 D
1.425 D

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

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

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Waste Water Engineering
Clogging of sewers, is caused due to

Low discharge
Silting
All of these
Greasy and oily matters

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Waste Water Engineering
Which one of the following tests is used for testing sewer pipes?

Mirror test
Water test
All of these
Ball test

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Waste Water Engineering
The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be

> 1.5 m
1.5 m
0.9 cm
1.2 m

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Waste Water Engineering
Flocculated particles do not change their

Weight
Size
Shape
None of these

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