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Waste Water Engineering

Waste Water Engineering
The minimum diameter of sewer to be adopted is

10 cm
15 cm
12.5 cm
25 cm

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Waste Water Engineering
For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed

2
3
2.5
1.5

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Waste Water Engineering
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of

120 cm
140 cm
160 cm
100 cm

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Waste Water Engineering
The temperature affects the

All of these
Biological activity of bacteria in sewage
Viscosity of sewage
Solubility of gases in sewage

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Waste Water Engineering
The minimum recommended diameter of sewers, is

10 cm
20 cm
5 cm
15 cm

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Waste Water Engineering
In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time?

150 mm dia
All of these
225 mm dia
100 mm dia

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