Waste Water Engineering With self cleansing velocity in sewers Neither silting nor scouring occurs at bottom Scouring occurs at bottom Silting occurs at bottom Both silting and scouring occur at bottom Neither silting nor scouring occurs at bottom Scouring occurs at bottom Silting occurs at bottom Both silting and scouring occur at bottom ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The standard B.O.D. of water is taken for 3 days 5 days 1 day 2 days 3 days 5 days 1 day 2 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is 0.12 cumec 0.10 cumec 0.20 cumec 0.15 cumec 0.12 cumec 0.10 cumec 0.20 cumec 0.15 cumec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewage treatment units in which anaerobic decomposition of organic matter is used, are called Imhoff tanks Trickling filters None of these Sludge sedimentation tanks Imhoff tanks Trickling filters None of these Sludge sedimentation tanks 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 1075 mm 1045 mm 1095 mm 1065 mm 1075 mm 1045 mm 1095 mm 1065 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is 0.75 m/sec 0.50 m/sec 0.70 m/sec 0.60 m/sec 0.75 m/sec 0.50 m/sec 0.70 m/sec 0.60 m/sec ANSWER DOWNLOAD EXAMIANS APP
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