Waste Water Engineering The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be 1.2 m > 1.5 m 1.5 m 0.9 cm 1.2 m > 1.5 m 1.5 m 0.9 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering ‘Cowl’ is provided at Lower end of ventilating column First step in manhole Upper end of the manhole Upper end of ventilating column Lower end of ventilating column First step in manhole Upper end of the manhole Upper end of ventilating column ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 200 ppm 100 ppm 50 ppm 150 ppm 200 ppm 100 ppm 50 ppm 150 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The normal value of over flow rates for plain primary sedimentation tanks, ranges between 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Maximum permissible velocity 1.5 m/sec, is adopted in drains Neither A. nor B. Lined with stones Both A. and B. With beds of rocks and gravels Neither A. nor B. Lined with stones Both A. and B. With beds of rocks and gravels ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Oxidation process results in the formation of Nitrates Carbon dioxide All of these Sulphates Nitrates Carbon dioxide All of these Sulphates ANSWER DOWNLOAD EXAMIANS APP
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