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Waste Water Engineering

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

Parabolic
Rectangular
New egged
Circular

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Waste Water Engineering
The gas evolved in sewers is

Hydrogen sulphide
Carbondioxide
Methane
All of these

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Waste Water Engineering
If the diameter of sewer is 225 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 laying of sewers is done with

Level
Magnetic compass
Clinometer
Theodolite

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Waste Water Engineering
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

Kinchling
All listed here
Frubling
Lloyd Davis

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Waste Water Engineering
The sewage is pumped up

All listed here
From low lying areas
From basements
From flat areas

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