Waste Water Engineering 5 days-biochemical oxygen demand (BOD5) is taken at a temperature of 0°C 15°C 25°C 20°C 0°C 15°C 25°C 20°C ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Maximum permissible velocity 1.5 m/sec, is adopted in drains Lined with stones With beds of rocks and gravels Neither A. nor B. Both A. and B. Lined with stones With beds of rocks and gravels Neither A. nor B. Both A. and B. 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 0.20 cumec 0.15 cumec 0.12 cumec 0.10 cumec 0.20 cumec 0.15 cumec 0.12 cumec 0.10 cumec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sewer ventilating columns are generally placed at Upper ends of branch sewers Distances 150 m to 300 m Every change in the size of sewers All listed here Upper ends of branch sewers Distances 150 m to 300 m Every change in the size of sewers All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer pipes Should resist the wear and tear caused due to abrasion Carry sewage as gravity conduits Are designed for generating self-cleansing velocities at different discharge All listed here Should resist the wear and tear caused due to abrasion Carry sewage as gravity conduits Are designed for generating self-cleansing velocities at different discharge All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For design purposes, the normal rate of infiltration of ground water into the sewer, is 1500 litres/km/cm 500 litres/km/cm 1000 litres/km/cm 2000 litres/km/cm 1500 litres/km/cm 500 litres/km/cm 1000 litres/km/cm 2000 litres/km/cm ANSWER DOWNLOAD EXAMIANS APP
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