Waste Water Engineering In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient, Is not enough Is only provided Is doubled Is trebled Is not enough Is only provided Is doubled Is trebled ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering With self cleansing velocity in sewers Silting occurs at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Both silting and scouring occur at bottom Silting occurs at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Both silting and scouring occur at bottom 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 100 ppm 200 ppm 150 ppm 50 ppm 100 ppm 200 ppm 150 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Fresh sewage may become stale in Two to three hours Six hours Three to four hours One hour Two to three hours Six hours Three to four hours One hour ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Rate of flow of sewage is generally assumed More than the rate of water supply At 150 litres per capita Less than the rate of water supply Equal to the rate of water supply More than the rate of water supply At 150 litres per capita Less than the rate of water supply Equal to the rate of water supply ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For large sewers, maximum distance between manholes may be 50 m 300 m 200 m 100 m 50 m 300 m 200 m 100 m ANSWER DOWNLOAD EXAMIANS APP
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