Waste Water Engineering In sewers the velocity of flow should not be More than the self-cleansing velocity Less than the self-cleansing velocity More than 20 m/sec Less than 10 m/sec More than the self-cleansing velocity Less than the self-cleansing velocity More than 20 m/sec Less than 10 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The following is the physical characteristic of sewage Odour Turbidity Colour All listed here Odour Turbidity Colour All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hydraulic mean radius is Mean of radii in a pipe line of varying cross -sections Mean radius of sewer Cross-sectional area/wetted perimeter Difference in heads between two points in circular pipes Mean of radii in a pipe line of varying cross -sections Mean radius of sewer Cross-sectional area/wetted perimeter Difference in heads between two points in circular pipes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a trickling filter Filtration process is used Neither A nor B Biological action is used Both A and B Filtration process is used Neither A nor B Biological action is used Both A and B ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sewer pipes need be checked for Maximum flow None of these Both A and B Minimum flow Maximum flow None of these Both A and B Minimum flow ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 300 mg/l 100 mg/l 200 mg/l 400 mg/l 300 mg/l 100 mg/l 200 mg/l 400 mg/l ANSWER DOWNLOAD EXAMIANS APP
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