Waste Water Engineering Skimming tanks are Those from which sludge is skimmed out Used to remove the grease and oil Tanks provided with self- cleansing screens Improved version of grit chambers Those from which sludge is skimmed out Used to remove the grease and oil Tanks provided with self- cleansing screens Improved version of grit chambers ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes at the junctions of sewer lines, are provided if 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 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 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is 50 mg/l 150 mg/l 250 mg/l 100 mg/l 50 mg/l 150 mg/l 250 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is 1 in 100 1 in 120 1 in 60 None of these 1 in 100 1 in 120 1 in 60 None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In olden days the type of section adopted in trunk and out fall sewers was Circular shaped Parabolic shaped Egg shaped Horse shoe shaped Circular shaped Parabolic shaped Egg shaped Horse shoe shaped ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Large diameter sewers subjected to external pressure alone, are reinforced Near the outer surface of the pipe Near the inner surface of the pipe Both A and B With elliptical cage Near the outer surface of the pipe Near the inner surface of the pipe Both A and B With elliptical cage ANSWER DOWNLOAD EXAMIANS APP
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