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Waste Water Engineering

Waste Water Engineering
The sewer that unloads the sewage at the point of treatment is called

House sewer
Branch sewer
Main sewer
Outfall sewer

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Waste Water Engineering
Sewer manholes are generally provided at

All of these
The change of gradient
The change of direction
The junctions of sewers

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Waste Water Engineering
When drainage to sewage ratio is 20, the peak dry weather flow is

None of these
Slightly less than 5% of the design discharge
Slightly more than 5% of the design discharge
20% of the design discharge

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Waste Water Engineering
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?

Pneumatic ejector
None of these
Centrifugal pump
Reciprocating pump

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Waste Water Engineering
If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is

1045 mm
1065 mm
1075 mm
1095 mm

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Waste Water Engineering
If the pH value of sewage is 7

It is acidic
It is alkaline
None of these
It is neutral

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