Waste Water Engineering Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for All of these Unexpected increase in the population Under estimates of maximum and average flows Unexpected large scale infiltration of stream water All of these Unexpected increase in the population Under estimates of maximum and average flows Unexpected large scale infiltration of stream water ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the highest non-scouring velocity is achieved in Glazed bricks sewers Cast iron sewers Stone ware sewers Cement concrete sewers Glazed bricks sewers Cast iron sewers Stone ware sewers Cement concrete sewers ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is 75 m 30 m 20 m 45 m 75 m 30 m 20 m 45 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter Less than 0.05 mm Less than 0.1 mm Greater than 0.1 mm Less than 0.01 mm Less than 0.05 mm Less than 0.1 mm Greater than 0.1 mm Less than 0.01 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Lead acetate test in sewer manhole is done to test the presence of Hydrogen sulphide Diesel vapours Methane gas Carbondioxide gas Hydrogen sulphide Diesel vapours Methane gas Carbondioxide gas 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/year 25 litres/person/month 30 litres/person/month 30 litres/person/year 25 litres/person/year 25 litres/person/month ANSWER DOWNLOAD EXAMIANS APP
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