Waste Water Engineering If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is 50 mg/l 150 mg/l 250 mg/l 100 mg/l 50 mg/l 150 mg/l 250 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Maximum permissible velocity 1.5 m/sec, is adopted in drains With beds of rocks and gravels Both A. and B. Neither A. nor B. Lined with stones With beds of rocks and gravels Both A. and B. Neither A. nor B. Lined with stones ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer pipe which carries sewage from a building for immediate disposal is Intercepting sewer Main sewer House sewer Lateral sewer Intercepting sewer Main sewer House sewer Lateral sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed 1.5 2.5 2 3 1.5 2.5 2 3 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most widely used pump for lifting sewage is Air pressure pump Pneumatic ejector Reciprocating pump Centrifugal pump Air pressure pump Pneumatic ejector Reciprocating pump Centrifugal pump ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Design period of 40 to 50 years is adopted for All listed here Main sewers Trunk sewers Branch sewers All listed here Main sewers Trunk sewers Branch sewers ANSWER DOWNLOAD EXAMIANS APP
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