A. separate system
B. combined system
C. partially separate system
D. partially combined system
A. much greater than 1
B. slightly less than 1
C. equal to 1
D. slightly greater than 1
The specific gravity of sewage is_______________? Read More »
Environmental Engineering A. given in the direction of natural slope of ground
B. given in the direction opposite to natural slope of ground
C. zero
D. steeper than 1 in 20
The slope of sewer shall be__________________? Read More »
Environmental Engineering A. equal to rainfall
B. rainfall + DWF
C. rainfall + 2 DWF
D. rainfall + 6 DWF
The design discharge for the combined sewer system shall be taken as________________? Read More »
Environmental EngineeringThe main disadvantage of cement concrete sewers is________________? Read More »
Environmental Engineering A. is economical than circular section
B. provides self cleansing velocity at low discharges
C. is more stable than circular section
D. is easy to construct
An egg shaped section of sewer________________? Read More »
Environmental Engineering A. circular brick sewer
B. circular cast iron sewer
C. semi-elliptical sewer
D. horse-shoe type sewer
The most commonly used sewer under culverts is_______________? Read More »
Environmental EngineeringThe characteristics of fresh and septic sewage respectively are____________________? Read More »
Environmental Engineering A. higher temperature
B. sunlight
C. satisfying oxygen demand
D. none of the above
Which of the following retards the self purification of stream ? Read More »
Environmental Engineering