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Waste Water Engineering

Waste Water Engineering
Water content of sewage is about

0.95
0.999
0.99
0.9

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Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

d = 0.5 B
B = 0.2 d
B = 0.5 d
d = 0.2 B

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Waste Water Engineering
Dry weather flow is:

Average monthly rate of flow
Average annual rate of flow
Water supply allowance per capita
Average daily rate of flow

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Waste Water Engineering
If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains

Carbon dioxide
Oxygen
Hydrogen sulphide
Methane

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Waste Water Engineering
If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is

1 in 100
None of these
1 in 60
1 in 120

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Waste Water Engineering
The disintegrating pump in which solid matter is broken up before passing out, is

Centrifugal pump
Pneumatic ejector
Reciprocating pump
None of these

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