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Waste Water Engineering

Waste Water Engineering
The drop man holes are generally provided in sewers for

Cities in plains
Large town ships
Industrial areas
Hilly town ships

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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?

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

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Waste Water Engineering
The sewer that unloads the sewage at the point of treatment is called

Branch sewer
House sewer
Main sewer
Outfall sewer

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Waste Water Engineering
Self-cleansing velocity is

Velocity at which no accumulation remains in the drains
Velocity at dry weather flow
Velocity of water in a pressure filter
Velocity of water at flushing

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Sanitary sewage
Surface water
Ground water
Storm sewage

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Waste Water Engineering
A drop manhole is provided if

A lamp is inserted to check obstruction
A branch sewer joins the main sewer at higher level
None of these
A sewer drops from a height

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