Environmental Engineering The minimum and maximum diameters of sewers shall preferably be 15 cm and 300 cm 60 cm and 300 cm 30 cm and 450 cm 15 cm and 100 cm 15 cm and 300 cm 60 cm and 300 cm 30 cm and 450 cm 15 cm and 100 cm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The velocity of flow does not depend on Hydraulic mean depth of sewer Roughness of sewer Grade of sewer Length of sewer Hydraulic mean depth of sewer Roughness of sewer Grade of sewer Length of sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Septic tank is a (i) Settling tank (ii) Digestion tank (iii) Aeration tank (i) and (ii) Only (i) (i) and (iii) Only (iii) (i) and (ii) Only (i) (i) and (iii) Only (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 0.2 to 0.4 5 to 7 2 to 4 0.4 to 1.0 0.2 to 0.4 5 to 7 2 to 4 0.4 to 1.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Cleaning is done by (i) Scraping and removal in filters slow sand (ii) Back washing in slow sand filters (iii) Scraping and removal in filters rapid sand (iv) Back washing in rapid sand filters The correct answer is (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 24 hours 5 minutes 1 minute 12 hours 24 hours 5 minutes 1 minute 12 hours ANSWER DOWNLOAD EXAMIANS APP
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