Civil Engineering - Water Supply Engineering
Exercise :: Water Supply Engineering - Section 1
| 21. |
According to Kuichling's formula, fire demand in litres per minute for a population of P thousands, is |
| A. |
3182 P | | B. |
 | | C. |
4637 P [1 - 0.01 P] | | D. |
5663 P. |
Answer: Option A
Explanation:
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| 22. |
The maximum permissible nitrites in public water supplies, is |
| A. |
Nil | | B. |
0.5 P.P.M. | | C. |
1.0. P.P.M. | | D. |
1.5 P.P.M. | | E. |
200 P.P.M. |
Answer: Option A
Explanation:
|
| 23. |
A high velocity of wash water is required for |
| A. |
rapid gravity filter with strainers | | B. |
rapid gravity filter without strainers | | C. |
slow sand filter with strainers | | D. |
slow sand filter without strainers | | E. |
none of these. |
Answer: Option B
Explanation:
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| 24. |
In distribution pipes, drain valves are provided at |
| A. |
lower point | | B. |
higher point | | C. |
junction points | | D. |
any where. |
Answer: Option A
Explanation:
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| 25. |
Corrosion of well pipes may not be reduced by |
| A. |
reducing the draw down and the pumping rate | | B. |
reducing the flow velocity | | C. |
using thicker pipes | | D. |
using screens having larger area of openings | | E. |
none of these. |
Answer: Option D
Explanation:
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