Waste Water Engineering The normal values of over flow rates for sedimentation tanks using coagulant, ranges between 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hydraulic mean radius is Difference in heads between two points in circular pipes Cross-sectional area/wetted perimeter Mean of radii in a pipe line of varying cross -sections Mean radius of sewer Difference in heads between two points in circular pipes Cross-sectional area/wetted perimeter Mean of radii in a pipe line of varying cross -sections Mean radius of sewer ANSWER DOWNLOAD EXAMIANS APP
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 > 1.5 m 0.9 cm 1.5 m 1.2 m > 1.5 m 0.9 cm 1.5 m 1.2 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Are available in size Stoneware sewers All of these 15 cm 20 cm 10 cm All of these 15 cm 20 cm 10 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes are the manholes With depths more than 3.5 m Without manhole covers Having drains at different levels Without entry ladders With depths more than 3.5 m Without manhole covers Having drains at different levels Without entry ladders ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is Vs = 218 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d [(3T + 70)/100] Vs = 418 (Gs – Gw)d² [(3T + 70)/100] Vs = 418 (Gs – Gw) d [(3T + 70)/100] Vs = 218 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d [(3T + 70)/100] Vs = 418 (Gs – Gw)d² [(3T + 70)/100] Vs = 418 (Gs – Gw) d [(3T + 70)/100] ANSWER DOWNLOAD EXAMIANS APP
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