Waste Water Engineering Pick up the incorrect statement from the following for allowing workers to enter sewers The men entering the manhole should be advised to smoke in the sewer The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Warning signals should be erected Proper tests for the presence of poisonous gases must be carried out The men entering the manhole should be advised to smoke in the sewer The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Warning signals should be erected Proper tests for the presence of poisonous gases must be carried out ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A manhole is classified as shallow if its depth is between 0.9 to 1.20 m 0.7 to 0.9 m 0.5 to 0.7 m 0.4 to 0.5 m 0.9 to 1.20 m 0.7 to 0.9 m 0.5 to 0.7 m 0.4 to 0.5 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most widely used pump for lifting sewage is Reciprocating pump Air pressure pump Centrifugal pump Pneumatic ejector Reciprocating pump Air pressure pump Centrifugal pump Pneumatic ejector ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The design period in years for pumping plants, is 2 to 3 1 3 to 5 5 to 10 2 to 3 1 3 to 5 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most efficient cross-section of sewers in a combined sewerage system is Circular New egged Parabolic Rectangular Circular New egged Parabolic Rectangular ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 100 ppm 50 ppm 200 ppm 150 ppm 100 ppm 50 ppm 200 ppm 150 ppm ANSWER DOWNLOAD EXAMIANS APP
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