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Waste Water Engineering

Waste Water Engineering
The sewer pipe which carries sewage from a building for immediate disposal is

Lateral sewer
House sewer
Main sewer
Intercepting sewer

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Waste Water Engineering
For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is

10 cm
18 cm
15 cm
12 cm

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Waste Water Engineering
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

1 in 60
1 in 120
None of these
1 in 100

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Waste Water Engineering
The sewer which resists sulphide corrosion, is

R.C. sewer
Lead sewer
Brick sewer
Cast iron sewer

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Waste Water Engineering
The factor responsible for purification of sewage in river is

Temperature
Hydrology
All listed here
Dissolved oxygen in water

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Waste Water Engineering
The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by

Crimp and Bruges
Bazin
William-Hazen
Kutter

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