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Waste Water Engineering

Waste Water Engineering
The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is

1.065
1.085
1.075
1.095

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Waste Water Engineering
Pathogens (or pathogenic bacterias) in water may cause

Typhoid
All listed here
Dysentery
Cholera

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Waste Water Engineering
In sewers the velocity of flow should not be

Less than 10 m/sec
More than 20 m/sec
Less than the self-cleansing velocity
More than the self-cleansing velocity

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Waste Water Engineering
In detritus tanks,

Flow velocity is kept 0.09 m/sec
Organic and inorganic materials are separated
Detention period is kept 3 to 4 minutes
All listed here

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Waste Water Engineering
The rational formula for peak drainage discharge, was evolved by

All of these
Kuichling
Fruhling
Lloyd David

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Waste Water Engineering
You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at

Two third full
Full depth
Half full
Three fourth full

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