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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

Lloyd Davis
Frubling
All listed here
Kinchling

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Waste Water Engineering
In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept

5
10
2
0.25

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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
The factor responsible for purification of sewage in river is

Temperature
Dissolved oxygen in water
All listed here
Hydrology

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Waste Water Engineering
In a sedimentation tank (length L, width B, depth D) the settling velocity of a particle for a discharge Q, is

Q/(B × L)
Q/(L × D)
Q/(B × D)
Q/L

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Waste Water Engineering
Removal of oil and grease from sewage, is known

Screening
None of these
Skimming
Filtration

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