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Waste Water Engineering

Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

d = 0.2 B
d = 0.5 B
B = 0.2 d
B = 0.5 d

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Waste Water Engineering
The rate of accumulation of sludge in septic tanks is recommended as

25 litres/person/year
25 litres/person/month
30 litres/person/month
30 litres/person/year

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Waste Water Engineering
For evaporation and measurement of settable solids, the apparatus used, is

A breaker
A jar
A test tube
An Imhoff cone

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Waste Water Engineering
Sewer pipes need be checked for

Both A and B
Minimum flow
Maximum flow
None of these

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Waste Water Engineering
The most effective arrangement for diverting excess storm water into a natural drainage, is

Leaping weir
None of these
Overflow weir
Siphon spill way

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Waste Water Engineering
The standard B.O.D. of water is taken for

5 days
2 days
3 days
1 day

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