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- Question
Water may not contain much impurities if its source is
Options- A. reservoirs
- B. stream flowing in plains
- C. lakes in lower regions
- D. spring along hill slopes
- E. none of these.
- Correct Answer
- spring along hill slopes
- 1. The dilution ratio at which the odour is hardly detectable is generally called threshold odour number and for public supplies it should not exceed
Options- A. 3
- B. 5
- C. 7
- D. 9
- E. 10 Discuss
- 2. Asbestos pipes are joined by means of
Options- A. flanged joint
- B. flexible joint
- C. dresser coupling joint
- D. simplex joint
- E. socket and spigot joint. Discuss
- 3. For the prediction of future population of a city, the factor to be considered, is
Options- A. births
- B. deaths
- C. migrants
- D. all the above. Discuss
- 4. Pick up the incorrect statement from the following :
Options- A. The flow in strainer type wells is radial
- B. The flow in cavity type wells in spherical
- C. In strainer type wells, area of flow depends upon the length of the strainer pipe
- D. In cavity type wells, area of flow depends upon the size of the cavity
- E. None of these. Discuss
- 5. Chlorination of water does not remove
Options- A. ammonia content
- B. B.O.D.
- C. organic matter content
- D. dissolved oxygen. Discuss
- 6. While designing a water supply of an industrial township, industrial and commercial water demand of total supply, is assumed
Options- A. 10%
- B. 10 to 15%
- C. 15 to 20%
- D. 20 to 25%. Discuss
- 7. Abyssinian tube well is a special type of
Options- A. slotted type wells
- B. cavity type wells
- C. strainer type well
- D. none of these. Discuss
- 8. Air valves are generally provided in pressure pipes of water supply
Options- A. at pipe junctions
- B. at summits
- C. at low points
- D. near service pipes. Discuss
- 9. The maximum permissible colour for domestic supplies based on cobalt scale, is
Options- A. 5 ppm
- B. 10 ppm
- C. 15 ppm
- D. 20 ppm
- E. 25 ppm. Discuss
- 10. The flow of water gets retarded, in
Options- A. settling tank
- B. sedimentation tank
- C. clarifer
- D. sedimentation basin
- E. all the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: 3
Correct Answer: simplex joint
Correct Answer: all the above.
Correct Answer: In strainer type wells, area of flow depends upon the length of the strainer pipe
Correct Answer: dissolved oxygen.
Correct Answer: 20 to 25%.
Correct Answer: strainer type well
Correct Answer: at summits
Correct Answer: 20 ppm
Correct Answer: all the above.
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