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Waste Water Engineering

Waste Water Engineering
The most efficient cross-section of sewers in a combined sewerage system is

New egged
Rectangular
Parabolic
Circular

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Waste Water Engineering
Discrete or granular particles change their

Size
Shape
None of these
Weight

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Waste Water Engineering
Which one of the following resists hydrogen sulphide corrosion?

Glazed stone wares
Asbestos cement
Glazed ware
R.C.C.

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Waste Water Engineering
Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is

pt = 2H3p/3 Z5
pt = 3H3p/2 Z5
pt = 2H3p/3 Z5
pt = 3H3p/2 Z5

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Waste Water Engineering
The average temperature of sewage in India, is

25°C
10°C
20°C
15°C

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Waste Water Engineering
The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is

0.88 m
1.36 m
0.68 m
1.76 m

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