Civil Engineering - Waste Water Engineering
Exercise :: Waste Water Engineering - Section 1
| 16. |
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is |
| A. |
2 hours | | B. |
3 hours | | C. |
4 hours | | D. |
5 hours. |
Answer: Option C
Explanation:
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| 17. |
An inverted siphon is designed generally for |
| A. |
one pipe | | B. |
two pipes | | C. |
three pipes | | D. |
four pipes. |
Answer: Option C
Explanation:
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| 18. |
A rainfall may be classified as acidic if its pH value is less or equal to |
Answer: Option C
Explanation:
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| 19. |
When drainage to sewage ratio is 20, the peak dry weather flow is |
| A. |
20% of the design discharge | | B. |
slightly less than 5% of the design discharge | | C. |
slightly more than 5% of the design discharge | | D. |
none of these. |
Answer: Option B
Explanation:
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| 20. |
For treating the sewage of a large city, you will recommend |
| A. |
a sedimentation tank and an activated sludge treatment plant | | B. |
a plant consisting of Imhoff tanks with low rate trickling filters | | C. |
sedimentation tanks with high rate trickling filters | | D. |
none of these. |
Answer: Option A
Explanation:
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