Category: Waste Water Engineering

A. A particle to travel along its length
B. A particle to travel from top surface to bottom sludge zone
C. The flow of sewage to fill the tank
D. None of these

A. More than the self-cleansing velocity
B. Less than the self-cleansing velocity
C. Less than 10 m/sec
D. More than 20 m/sec

A. 50 m
B. 100 m
C. 200 m
D. 300 m

A. 30 to 40%
B. 40 to 60%
C. 60 to 80%
D. 80 to 90%

A. Size
B. Shape
C. Weight
D. None of these

A. 10 litres
B. 15 litres
C. 20 litres
D. 25 litres

A. 2.5 to 3.0 m/sec
B. 3.0 to 4.0 m/sec
C. 3.5 to 4.5 m/sec
D. 4.5 to 5.5 m/sec

A. 52.5 cm
B. 67.5 cm
C. 82.5 cm
D. None of these

A. Steel pipes
B. Steel shell coated from inside with cement mortar
C. Steel shell coated from outside with cement mortar
D. Both B. and C.

A. The change of gradient
B. The change of direction
C. The junctions of sewers
D. All of these