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Waste Water Engineering

Waste Water Engineering
The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is

2
3
4
1.5

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

Horse shoe shaped
Standard egg shaped
Circular shaped
Parabolic shaped

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Waste Water Engineering
In olden days the type of section adopted in trunk and out fall sewers was

Parabolic shaped
Egg shaped
Circular shaped
Horse shoe shaped

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.75 D
1.5 D
1.25 D
1.15 D

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Waste Water Engineering
The most dangerous pollutant in vehicular emissions is

SO₂
CO₂
O₂
CO₂

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Waste Water Engineering
The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is

212 cu.m
216 cu.m
204 cu.m
208 cu.m

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