Environmental Engineering The detention period in coagulation tanks is usually kept as 2 to 6 days 1 to 2 minutes 30 to 45 minutes 2 to 6 hours 2 to 6 days 1 to 2 minutes 30 to 45 minutes 2 to 6 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Hardy cross method of analysis of distribution system (i) Involves successive trials (ii) Takes economic aspects into account (iii) Is time consuming (i) and (iii) All are correct Only (i) (i) and (ii) (i) and (iii) All are correct Only (i) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be Partially separate system Partially combined system Separate system Combined system Partially separate system Partially combined system Separate system Combined system ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The depression of water table in a well due to pumping will be maximum(Where ‘R’ is the radius of influence) At a distance R from the well At a distance R/2 from the well Close to the well None of these At a distance R from the well At a distance R/2 from the well Close to the well None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is None of these Equal to HMD when flowing full Less than HMD when flowing full Greater than HMD when flowing full None of these Equal to HMD when flowing full Less than HMD when flowing full Greater than HMD when flowing full ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The ratio of 5 day BOD to ultimate BOD is about 43864 43894 1 43833 43864 43894 1 43833 ANSWER DOWNLOAD EXAMIANS APP
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