Waste Water Engineering The sewers Must be laid at least 2 to 3 m deep to collect /water from the basements Must flow under gravity ½ to ¾ full Must be of adequate size to avoid over flow All listed here Must be laid at least 2 to 3 m deep to collect /water from the basements Must flow under gravity ½ to ¾ full Must be of adequate size to avoid over flow All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is 0.30 m/sec 0.35 m/sec 0.45 m/sec 0.40 m/sec 0.30 m/sec 0.35 m/sec 0.45 m/sec 0.40 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering With self cleansing velocity in sewers Both silting and scouring occur at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Silting occurs at bottom Both silting and scouring occur at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Silting occurs at bottom ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Cement concrete sewers are only suitable if non-scouring velocity is between 3.0 to 4.0 m/sec 3.5 to 4.5 m/sec 2.5 to 3.0 m/sec 4.5 to 5.5 m/sec 3.0 to 4.0 m/sec 3.5 to 4.5 m/sec 2.5 to 3.0 m/sec 4.5 to 5.5 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is 400 mg/l 300 mg/l 100 mg/l 200 mg/l 400 mg/l 300 mg/l 100 mg/l 200 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The laying of sewers is done with Theodolite Clinometer Magnetic compass Level Theodolite Clinometer Magnetic compass Level ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS