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Waste Water Engineering

Waste Water Engineering
The sewerage system consists of

Lateral sewer
Branch sewer
All of these
House sewer

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Waste Water Engineering
A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

2.45 m
2.50 m
2.30 m
2.40 m

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Waste Water Engineering
A manhole is generally provided at each

Change of gradient
Bend
Junction
All of these

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Waste Water Engineering
In sewers the gas generally found, is

Hydrogen sulphide (H2S)
All listed here
Methane (CH4)
Carbon dioxide (CO2)

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Waste Water Engineering
Drop manholes are the manholes

Without entry ladders
Having drains at different levels
Without manhole covers
With depths more than 3.5 m

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Waste Water Engineering
For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is

Stone ware sewers
Cast iron sewers
Cement concrete sewers
Glazed bricks sewers

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