Waste Water Engineering
Skimming tanks are

Those from which sludge is skimmed out
Tanks provided with self- cleansing screens
Improved version of grit chambers
Used to remove the grease and oil

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
Hydraulic mean radius is

Mean radius of sewer
Mean of radii in a pipe line of varying cross -sections
Difference in heads between two points in circular pipes
Cross-sectional area/wetted perimeter

ANSWER DOWNLOAD EXAMIANS APP