Waste Water Engineering For a continuous flow type of sedimentation tanks All listed here Maximum horizontal flow velocity is limited to 0.3 m/minute Length of the tank is normally kept 4 to 5 times the width Width of the tank is normally kept about 6 m All listed here Maximum horizontal flow velocity is limited to 0.3 m/minute Length of the tank is normally kept 4 to 5 times the width Width of the tank is normally kept about 6 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains Hydrogen sulphide Methane Carbon dioxide Oxygen Hydrogen sulphide Methane Carbon dioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers designed with self cleansing velocity, Neither silting nor scouring occurs at the bottom Both silting and scouring occur at the bottom The bottom is scoured The bottom is silted Neither silting nor scouring occurs at the bottom Both silting and scouring occur at the bottom The bottom is scoured The bottom is silted ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Rate of flow of sewage is generally assumed Equal to the rate of water supply At 150 litres per capita Less than the rate of water supply More than the rate of water supply Equal to the rate of water supply At 150 litres per capita Less than the rate of water supply More than the rate of water supply ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In case of Imhoff tanks, Detention period is 2 hours The velocity of flow is restricted to 0.30 m/minute All of these The shape is rectangular Detention period is 2 hours The velocity of flow is restricted to 0.30 m/minute All of these The shape is rectangular 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 0.15 cumec 0.20 cumec 0.10 cumec 0.12 cumec 0.15 cumec 0.20 cumec 0.10 cumec ANSWER DOWNLOAD EXAMIANS APP
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