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Waste Water Engineering

Waste Water Engineering
The sewer pipe which carries sewage from a building for immediate disposal is

House sewer
Lateral sewer
Intercepting sewer
Main sewer

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Waste Water Engineering
The sewage treatment units in which anaerobic decomposition of organic matter is used, are called

Sludge sedimentation tanks
None of these
Imhoff tanks
Trickling filters

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Waste Water Engineering
In sewers designed with self cleansing velocity,

Neither silting nor scouring occurs at the bottom
The bottom is scoured
The bottom is silted
Both silting and scouring occur at the bottom

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Waste Water Engineering
In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is

D/2
D/3
D/4
D/1

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Waste Water Engineering
R.M.O. expenses include

Operation expenses
All of these
Running expenses
Maintenance expenses

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

Kinchling
All listed here
Lloyd Davis
Frubling

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