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Waste Water Engineering

Waste Water Engineering
The formula V = (1/n) r2/3

Chezy’s formula
Manning’s formula
Bazin’s formula
Kutter’s formula

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Waste Water Engineering
1000 kg of sewage contains

0.225 kg in solution
Both A and C of above
0.112 kg in suspension
0.112 kg in solution

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Waste Water Engineering
In normal conditions, the period for sludge digestion, is

20 days
60 days
30 days
10 days

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Waste Water Engineering
If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by

Kutter
Chezy
Manning
Bazin

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Waste Water Engineering
A drop manhole is provided if

A sewer drops from a height
A branch sewer joins the main sewer at higher level
A lamp is inserted to check obstruction
None of these

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Waste Water Engineering
If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by

Chezy
Kutter
Bazin
Manning

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