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Waste Water Engineering

Waste Water Engineering
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

Kinchling
All listed here
Frubling
Lloyd Davis

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Waste Water Engineering
To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is

0.75 m/sec
0.60 m/sec
0.50 m/sec
0.70 m/sec

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Waste Water Engineering
The suitable cross-section of sewers to carry combined flow, is

Circular
Rectangular
Horse shoe shaped
Egg shaped

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Waste Water Engineering
The sewerage system originates from

Lateral sewers
Main sewers
House sewers
Branch sewers

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Waste Water Engineering
The sewage treatment in septic tanks is due to

None of these
Parasitic decomposition
Anaerobic decomposition
Aerobic decomposition

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Waste Water Engineering
For efficient working of a sewer, it must be ensured that

Minimum velocity of 0.45 m/sec, is maintained at its minimum flow
Both (A) and (B)
Neither (A) nor (B)
A maximum velocity of 0.90 m/sec, is maintained at its maximum flow

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