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Waste Water Engineering

Waste Water Engineering
Pathogens (or pathogenic bacterias) in water may cause

Typhoid
Cholera
Dysentery
All listed here

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Waste Water Engineering
The maximum depth of sedimentation tanks, is kept

3 m
3.5 m
4.5 m
4 m

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Waste Water Engineering
The sewerage system originates from

Lateral sewers
Main sewers
Branch sewers
House sewers

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

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

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Waste Water Engineering
The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is

Vs = 418 (Gs – Gw) d [(3T + 70)/100]
Vs = 218 (Gs – Gw)d [(3T + 70)/100]
Vs = 218 (Gs – Gw)d² [(3T + 70)/100]
Vs = 418 (Gs – Gw)d² [(3T + 70)/100]

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Waste Water Engineering
The rational formula for peak drainage discharge, was evolved by

All of these
Kuichling
Lloyd David
Fruhling

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