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Waste Water Engineering

Waste Water Engineering
If the pH value of sewage is 7

None of these
It is acidic
It is alkaline
It is neutral

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Waste Water Engineering
¾th or ¼th extra space is left in sewer pipes at maximum discharge for

Large scale infiltration of storm water
Unexpected increase in population
Low estimates of the average and maximum flows
All listed here

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Waste Water Engineering
An inverted siphon is designed generally for

Four pipes
Two pipes
One pipe
Three pipes

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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/1
D/3
D/2
D/4

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Waste Water Engineering
The pH value of sewage is determined with the help of

None of these
Imhoff Cone
Potentiometer
Turbid meter

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Waste Water Engineering
If q is the average sewage flow from a city of population P, the maximum sewage flow

Q = [(5 + )/((15 + )] q
Q = [(4 + )/(18 + )] q
Q = [(18 + P)/(4 + )] q
Q = [(18 + )/(4 + )] q

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