Waste Water Engineering If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains Oxygen Methane Carbon dioxide Hydrogen sulphide Oxygen Methane Carbon dioxide Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering When drainage to sewage ratio is 20, the peak dry weather flow is 20% of the design discharge Slightly less than 5% of the design discharge Slightly more than 5% of the design discharge None of these 20% of the design discharge Slightly less than 5% of the design discharge Slightly more than 5% of the design discharge None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The rate of accumulation of sludge in septic tanks is recommended as 30 litres/person/month 30 litres/person/year 25 litres/person/month 25 litres/person/year 30 litres/person/month 30 litres/person/year 25 litres/person/month 25 litres/person/year ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Imhoff cone is used to measure Total in organic solids Total solids Total organic solids Settleable solids Total in organic solids Total solids Total organic solids Settleable solids ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sewer manholes are generally provided at The change of gradient The change of direction The junctions of sewers All of these The change of gradient The change of direction The junctions of sewers All of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a grit chamber of a sewage treatment plant, Flow velocity 0.15 m to 0.3 m/sec is kept Depth of 0.9 m to 1.20 m is kept All of these One minute of detention period is kept Flow velocity 0.15 m to 0.3 m/sec is kept Depth of 0.9 m to 1.20 m is kept All of these One minute of detention period is kept ANSWER DOWNLOAD EXAMIANS APP
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