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Waste Water Engineering

Waste Water Engineering
In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,

Is only provided
Is trebled
Is not enough
Is doubled

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

Horse shoe shaped
Parabolic shaped
Circular shaped
Standard egg shaped

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Waste Water Engineering
In sewers the gas generally found, is

All listed here
Carbon dioxide (CO2)
Hydrogen sulphide (H2S)
Methane (CH4)

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Waste Water Engineering
The design period in years for pumping plants, is

2 to 3
5 to 10
3 to 5
1

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Waste Water Engineering
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

All listed here
Lloyd Davis
Kinchling
Frubling

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Waste Water Engineering
In trickling filter, B.O.D. is reduced to

30 to 40%
40 to 60%
80 to 90%
60 to 80%

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