Waste Water Engineering As compared to fresh river water, sea water contains oxygen 10% more 10% less 20% more 20% less 10% more 10% less 20% more 20% less ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by William-Hazen Kutter Bazin Crimp and Bruges William-Hazen Kutter Bazin Crimp and Bruges ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes at the junctions of sewer lines, are provided if Two sewer lines intersect Ordinary manhole cannot be built Invert level of a branch sewer is more than 60 cm that of the main sewer Sewer line runs along a main road Two sewer lines intersect Ordinary manhole cannot be built Invert level of a branch sewer is more than 60 cm that of the main sewer Sewer line runs along a main road ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For design of sewers, percentage of sewage discharge is assumed 0.85 65 to 70% 70 to 75% 75 to 80% 0.85 65 to 70% 70 to 75% 75 to 80% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is 413.5 cm/sec 213.5 cm/sec 313.5 cm/sec 500 cm/sec 413.5 cm/sec 213.5 cm/sec 313.5 cm/sec 500 cm/sec 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 150 ppm 200 ppm 100 ppm 50 ppm 150 ppm 200 ppm 100 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP