Waste Water Engineering In sewers the velocity of flow should not be Less than 10 m/sec More than 20 m/sec Less than the self-cleansing velocity More than the self-cleansing velocity Less than 10 m/sec More than 20 m/sec Less than the self-cleansing velocity More than the self-cleansing velocity ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The pH value of fresh sewage is usually Equal to 7 More than 7 Equal to zero Less than 7 Equal to 7 More than 7 Equal to zero Less than 7 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Traps Are used to trap the rats entering sewers Are water seals which prevent the entry of foul gases Dissolve the foul gases Create symphonic action to increase the quick disposal of sewerage Are used to trap the rats entering sewers Are water seals which prevent the entry of foul gases Dissolve the foul gases Create symphonic action to increase the quick disposal of sewerage ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The value of Chezy’s constant C = 157.6/(1.81 + K/ ) is used in Chezy’s formula Bazin’s formula Kutter’s formula Manning’s formula Chezy’s formula Bazin’s formula Kutter’s formula Manning’s formula ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is 216 cu.m 208 cu.m 212 cu.m 204 cu.m 216 cu.m 208 cu.m 212 cu.m 204 cu.m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is D/1 D/3 D/4 D/2 D/1 D/3 D/4 D/2 ANSWER DOWNLOAD EXAMIANS APP
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