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WASTE WATER ENGINEERING

Waste Water Engineering
The laying of sewers is done with

Level
Clinometer
Theodolite
Magnetic compass

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Waste Water Engineering
The sewer which received discharge from two or more main sewers, is known as

A main sewer
A trunk sewer
An intercepting sewer
An outfall sewer

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Waste Water Engineering
If q is the average sewage flow from a city of population P, the maximum sewage flow

Q = [(18 + )/(4 + )] q
Q = [(4 + )/(18 + )] q
Q = [(18 + P)/(4 + )] q
Q = [(5 + )/((15 + )] q

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Waste Water Engineering
Fresh sewage may become stale in

Three to four hours
Six hours
One hour
Two to three hours

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Waste Water Engineering
The grit and silt of the grit chambers, may not be used for

Neither A nor B
Concreting
Both A and B
Raising low lying areas by dumping

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