Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is 225 ppm None of these 250 ppm 200 ppm 225 ppm None of these 250 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains Oxygen Hydrogen sulphide Methane Carbon dioxide Oxygen Hydrogen sulphide Methane Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering 15 cumecs, the depth d and width are related by For drains up to d = 0.5 B B = 0.2 d B = 0.5 d d = 0.2 B d = 0.5 B B = 0.2 d B = 0.5 d d = 0.2 B ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter Less than 0.05 mm Greater than 0.1 mm Less than 0.1 mm Less than 0.01 mm Less than 0.05 mm Greater than 0.1 mm Less than 0.1 mm Less than 0.01 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is 1045 mm 1065 mm 1095 mm 1075 mm 1045 mm 1065 mm 1095 mm 1075 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For trunk and out-fall, the type of sewers generally used, is Standard egg shaped Horse shoe shaped Circular shaped Parabolic shaped Standard egg shaped Horse shoe shaped Circular shaped Parabolic shaped ANSWER DOWNLOAD EXAMIANS APP
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