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Waste Water Engineering

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

20°C
25°C
15°C
10°C

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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?

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

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Waste Water Engineering
In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is

20
15
5
10

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Waste Water Engineering
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called

Inverted syphon
Sag pipe
Depressed sewer
all of these

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Waste Water Engineering
Hume steel pipes are

Steel shell coated from outside with cement mortar
Both B and C
Steel pipes
Steel shell coated from inside with cement mortar

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Waste Water Engineering
For sewers, inverted siphon is provided for

Four pipes
Two pipes
One pipe
Three pipes

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