Environmental Engineering An egg shaped section of sewer Is economical than circular section Provides self cleansing velocity at low discharges Is more stable than circular section Is easy to construct Is economical than circular section Provides self cleansing velocity at low discharges Is more stable than circular section Is easy to construct ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period in coagulation tanks is usually kept as 1 to 2 minutes 2 to 6 days 30 to 45 minutes 2 to 6 hours 1 to 2 minutes 2 to 6 days 30 to 45 minutes 2 to 6 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Sewerage system is usually designed for 26 years 28 years 27 years 25 years 26 years 28 years 27 years 25 years ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a given discharge, the efficiency of sedimentation tank can be increased by Decreasing the surface area of tank Increasing the depth of tank Increasing the surface area of tank Decreasing the depth of tank Decreasing the surface area of tank Increasing the depth of tank Increasing the surface area of tank Decreasing the depth of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In chlorination, with the rise in temperature of water, death rate of bacteria Decreases Increases None of these Remains unaffected Decreases Increases None of these Remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of cement concrete sewers is Less strength Difficulty in transportation due to heavy weight Less life Difficulty in construction Less strength Difficulty in transportation due to heavy weight Less life Difficulty in construction ANSWER DOWNLOAD EXAMIANS APP
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