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Waste Water Engineering

Waste Water Engineering
The average temperature of sewage in India, is

15°C
20°C
10°C
25°C

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Storm sewage
Sanitary sewage
Ground water
Surface water

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Waste Water Engineering
The quantity of liquid waste which flows in sewers during the period of rainfall, is known

None of these
Industrial waste
Storm sewage
Sanitary sewage

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

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Waste Water Engineering
For trunk and out-fall, the type of sewers generally used, is

Standard egg shaped
Horse shoe shaped
Circular shaped
Parabolic shaped

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Waste Water Engineering
The porosity of sediments in sewer pipes, is usually taken as

0.012
0.01
0.011
0.013

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