Q272
Pick up the correct statement from the following:
A.
The larger the sewer in size, more will be velocity
B.
The smaller the sewer in size, less will be velocity
C.
The larger the sewer in size, no deposition will take place
D.
The larger the sewer in size, deposition will take place
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
As the size of the sewer increases, the velocity of the flow decreases because the flow is spread over a larger cross-sectional area. This decrease in velocity can lead to deposition of solids, as the flow may not be strong enough to carry the sediment through the sewer.
Therefore, in larger sewers, there is a higher likelihood of deposition taking place.