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Waste Water Engineering

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

All listed here
Kinchling
Frubling
Lloyd Davis

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Waste Water Engineering
Cement concrete sewers are only suitable if non-scouring velocity is between

4.5 to 5.5 m/sec
3.5 to 4.5 m/sec
3.0 to 4.0 m/sec
2.5 to 3.0 m/sec

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Waste Water Engineering
A well oxidized sewage contains nitrogen mainly as

Free ammonia
None of these
Nitrites
Nitrates

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Waste Water Engineering
The flow velocity in detritus tanks is

None of these
0.05 m/sec
1.25 m/sec
0.09 m/sec

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Waste Water Engineering
The asbestos cement sewers are

Light in weight
Susceptible to corrosion by sulphuric acid
All of these
Not structurally strong to bear large compressive stress

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Waste Water Engineering
The rate of accumulation of sludge per person per year, is

10 litres
20 litres
25 litres
15 litres

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