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- Question
Average annual rainfall at any station is the average of annual rainfall over a period of
Options- A. 7 years
- B. 14 years
- C. 21 years
- D. 28 years
- E. 35 years.
- Correct Answer
- 35 years.
- 1. Manholes along the mains from the source to a city are provided at 500 m intervals in
Options- A. steel pipes
- B. R.C.C. pipes
- C. hume steel pipes
- D. all the above. Discuss
- 2. In pressure supply mains, water hammer pressure is reduced by providing
Options- A. sluice valves
- B. air valves
- C. pressure relief valves
- D. none of the these. Discuss
- 3. Corrosion of well pipes may not be reduced by
Options- 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. Discuss
- 4. Distribution mains of any water supply, is normally designed for its average daily requirement
Options- A. 100%
- B. 150%
- C. 200%
- D. 225%. Discuss
- 5. In distribution pipes, drain valves are provided at
Options- A. lower point
- B. higher point
- C. junction points
- D. any where. Discuss
- 6. Corrosion of a pipe
Options- A. reduces its life span
- B. reduces its carrying capacity
- C. adds colour to water
- D. adds odour to water
- E. all the above. Discuss
- 7. The population growth curve is
Options- A. S-shaped curve
- B. parabolic curve
- C. circular curve
- D. straight line
- E. none of these. Discuss
- 8. The least thickness of class B cast iron (spun) pipe, is
Options- A. 7.2 mm
- B. 7.9 mm
- C. 8.6 mm
- D. 10 mm. Discuss
- 9. The transitional middle portion of a logistic curve follows
Options- A. a geometric growth
- B. a logarithmic growth
- C. a first over curve
- D. a constant rate. Discuss
- 10. Most satisfactory formula for an estimate of fire demand Q for a city of population P in thousands for Indian conditions, is
Options- A.
- B. Q = 1640 P (1 - 0.01 P)
- C. Q = 3180 P
- D. none of these. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: all the above.
Correct Answer: pressure relief valves
Correct Answer: using screens having larger area of openings
Correct Answer: 225%.
Correct Answer: lower point
Correct Answer: all the above.
Correct Answer: S-shaped curve
Correct Answer: 8.6 mm
Correct Answer: a constant rate.
Correct Answer: Q = 3180 P
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