Waste Water Engineering If D is the diameter of a circular sewer and D’ is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is D’ = 0.74 D D’ = 0.64 D D’ = 0.84 D D’ = 0.94 D D’ = 0.74 D D’ = 0.64 D D’ = 0.84 D D’ = 0.94 D ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a sedimentation tank (length L, width B, depth D) the settling velocity of a particle for a discharge Q, is Q/(L × D) Q/(B × D) Q/L Q/(B × L) Q/(L × D) Q/(B × D) Q/L Q/(B × L) ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is 20 m 16 m 24 m 30 m 20 m 16 m 24 m 30 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The pressure exerted by Pressure sewers are designed to be safe in tension The internal pressure if any, causes tensile stress in the pipe material The sewage when running full from inside, is called internal pressure All listed here Pressure sewers are designed to be safe in tension The internal pressure if any, causes tensile stress in the pipe material The sewage when running full from inside, is called internal pressure All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The gas evolved in sewers is Hydrogen sulphide Carbondioxide All of these Methane Hydrogen sulphide Carbondioxide All of these Methane 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 0.20 cumec 0.15 cumec 0.10 cumec 0.12 cumec 0.20 cumec 0.15 cumec 0.10 cumec ANSWER DOWNLOAD EXAMIANS APP
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