Waste Water Engineering The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is 500 cm/sec 413.5 cm/sec 213.5 cm/sec 313.5 cm/sec 500 cm/sec 413.5 cm/sec 213.5 cm/sec 313.5 cm/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewage treatment in septic tanks is due to Anaerobic decomposition Parasitic decomposition None of these Aerobic decomposition Anaerobic decomposition Parasitic decomposition None of these Aerobic decomposition ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains Carbon dioxide Methane Hydrogen sulphide Oxygen Carbon dioxide Methane Hydrogen sulphide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by Chezy Bazin Kutter Manning Chezy Bazin Kutter Manning ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Inter-distance between ventilation columns in a sewer line is kept 50 m to 100 m 25 to 50 m 150 m to 300 m 100 m to 150 m 50 m to 100 m 25 to 50 m 150 m to 300 m 100 m to 150 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of Carbondioxide gas Petrol vapours Hydrogen sulphide gas Methane gas Carbondioxide gas Petrol vapours Hydrogen sulphide gas Methane gas ANSWER DOWNLOAD EXAMIANS APP
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