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Waste Water Engineering

Waste Water Engineering
In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,

Is only provided
Is trebled
Is doubled
Is not enough

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Waste Water Engineering
The disintegrating pump in which solid matter is broken up before passing out, is

Centrifugal pump
Reciprocating pump
Pneumatic ejector
None of these

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Waste Water Engineering
If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of

Degradation
Cleaner water
Recovery
Active decomposition

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Waste Water Engineering
For design of sewers, percentage of sewage discharge is assumed

70 to 75%
75 to 80%
65 to 70%
0.85

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Waste Water Engineering
The underground sewers are more subjected to

Compressive force
Bending force
Shearing force
Tensile force

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Waste Water Engineering
Dry water flow in a combined sewer, is

Industrial sewage
Inclusive of domestic and industrial sewage but excludes storm water
Storm water
Domestic sewage

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