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Waste Water Engineering

Waste Water Engineering
The laying of sewers is done with

Magnetic compass
Level
Theodolite
Clinometer

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Waste Water Engineering
Drop manholes are the manholes

Without manhole covers
With depths more than 3.5 m
Without entry ladders
Having drains at different levels

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Waste Water Engineering
For sewers, inverted siphon is provided for

Two pipes
One pipe
Three pipes
Four pipes

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Waste Water Engineering
Cement concrete sewers are only suitable if non-scouring velocity is between

3.5 to 4.5 m/sec
4.5 to 5.5 m/sec
3.0 to 4.0 m/sec
2.5 to 3.0 m/sec

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Waste Water Engineering
In sewage having fully oxidised organic matter, the nitrogen exists in the form of

Free ammonia
Nitrites
Nitrates
Aluminoid nitrogen

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Waste Water Engineering
depends upon The Chezy’s constant C in the formula V = C

Shape of the sewer
Size of the sewer
All listed here
Roughness of sewer surface

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MORE MCQ ON Waste Water Engineering

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