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Waste Water Engineering

Waste Water Engineering
The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is

20 m
75 m
45 m
30 m

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Waste Water Engineering
If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is

80 cm
90 cm
100 cm
50 cm

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

A jar
A breaker
An Imhoff cone
A test tube

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Waste Water Engineering
You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at

Half full
Three fourth full
Two third full
Full depth

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Waste Water Engineering
In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is

2.65
2.25
2.5
2.55

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Waste Water Engineering
The flow velocity in detritus tanks is

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

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