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Waste Water Engineering

Waste Water Engineering
The formula V = (1/n) r2/3

Chezy’s formula
Bazin’s formula
Kutter’s formula
Manning’s formula

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Waste Water Engineering
The normal values of over flow rates for secondary sedimentation tanks, ranges between

25,000 to 35,000 litres/sqm/day
80,000 to 10,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day
50,000 to 60,000 litres/sqm/day

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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 outfall sewer
An intercepting sewer

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Waste Water Engineering
Which one of the following part of human body withstands minimum radiation?

Eyes
Kidneys
Ovaries/testis
Thyroid

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Waste Water Engineering
If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of

Degradation
Active decomposition
Recovery
Cleaner water

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Waste Water Engineering
If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by

Kutter
Manning
Chezy
Bazin

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