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Waste Water Engineering

Waste Water Engineering
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

3 hours
5 hours
2 hours
4 hours

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Waste Water Engineering
Which one of the following tests is used for testing sewer pipes?

Water test
All of these
Ball test
Mirror test

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Waste Water Engineering
If the length of overland flow from the critical point to the mouth of drain is 13.58 km and difference in level between the critical point and drain mouth is 10 m, the inlet time is

6 hours
2 hours
8 hours
4 hours

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Waste Water Engineering
The maximum depth of sedimentation tanks, is kept

4 m
3 m
3.5 m
4.5 m

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

Is not enough
Is only provided
Is doubled
Is trebled

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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

Bazin
Kutter
Manning
Chezy

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