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 The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally Less and more Less and less More and less More and more Less and more Less and less More and less More and more ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 1.8 2.7 1.5 2.0 1.8 2.7 1.5 2.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank depends on Surface area of tank Depth of tank Both depth and surface area of tank None of these Surface area of tank Depth of tank Both depth and surface area of tank None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Dissolved oxygen in streams is Same throughout the day Minimum at noon Maximum at noon Maximum at midnight Same throughout the day Minimum at noon Maximum at noon Maximum at midnight ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 8.5 to 10.0 6.5 to 8.0 10.5 to 12.0 4.5 to 6.0 8.5 to 10.0 6.5 to 8.0 10.5 to 12.0 4.5 to 6.0 ANSWER DOWNLOAD EXAMIANS APP
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