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Waste Water Engineering

The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is__________________?

Civil Engineering Mcqs, Waste Water Engineering /
The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is__________________?

A. 0.10 cumec
B. 0.12 cumec
C. 0.15 cumec
D. 0.20 cumec

The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is__________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________________?

Civil Engineering Mcqs, Waste Water Engineering /
Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________________?

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true

Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

If the flame of a miner’s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains_______________?

Civil Engineering Mcqs, Waste Water Engineering /
If the flame of a miner’s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains_______________?

A. Hydrogen sulphide
B. Carbon dioxide
C. Methane
D. Oxygen

If the flame of a miner’s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains_______________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is ?

Civil Engineering Mcqs, Waste Water Engineering /
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is ?

A. Centrifugal pump
B. Pneumatic ejector
C. Reciprocating pump
D. None of these

Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is ? Read More »

Civil Engineering Mcqs, Waste Water Engineering