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Waste Water Engineering

Waste Water Engineering
The water carried sewerage system removes

Industrial sewage
All listed here
Storm sewage
Domestic sewage

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Waste Water Engineering
The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is

1.075
1.065
1.095
1.085

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Waste Water Engineering
In sewers the velocity of flow should not be

More than 20 m/sec
More than the self-cleansing velocity
Less than 10 m/sec
Less than the self-cleansing velocity

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Waste Water Engineering
In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is

D/3
D/2
D/1
D/4

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Waste Water Engineering
Lead caulked joints are used for laying

G.I. pipes
Earthenware pipes
I. pipes
Stone ware pipes

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Waste Water Engineering
Fresh sewage is generally

Acidic
Alkaline
A source of objectionable odour
Highly decomposed

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