Waste Water Engineering
A sewer running partially full and hurried with back filled, fails in compression due to

All listed here
Weight of the pipe
Weight of the back fill
Superimposed traffic loads

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
In the activated sludge process

Water is removed by centrifugal action
Aeration is continued till stability
Sludge is activated by constant stirring
Aeration is done with an admixture of previously aerated sludge

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
The clarigesters are

Circular septic tanks
Circular Imhoff double tanks with bottom hoppers
Circular Imhoff double storey tanks without bottom hoppers
Rectangular septic tanks

ANSWER DOWNLOAD EXAMIANS APP