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- Question
The permissible pH value for public water supplies may range between
Options- A. 4.5 to 5.5
- B. 5.5 to 6.5
- C. 6.5 to 8.5
- D. 8.5 to 10.5
- E. none of these.
- Correct Answer
- 6.5 to 8.5
- 1. The maximum permitted loss of head in a rapid sand filter, is
Options- A. 1 m
- B. 2 m
- C. 3 m
- D. 4 m
- E. 5 m. Discuss
- 2. The cast iron pipes for water supply system are used for
Options- A. durability
- B. strength
- C. easy connection
- D. low maintenance cost
- E. all the above. Discuss
- 3. For centrifugal pumps
Options- A. initial cost is low
- B. limited space is required
- C. the discharge obtained is steady and non-pulsating
- D. all the above. Discuss
- 4. Turbidity of water may be caused due to
Options- A. Suspended clay
- B. Suspended silt
- C. finely divided organic material
- D. all the above. Discuss
- 5. Service connections to consumers houses, are generally provided with
Options- A. copper pipes
- B. hume pipes
- C. galvanised iron pipes
- D. P.V.C. pipes
- E. none of these. Discuss
- 6. Standard process of chlorination of water, is done by
Options- A. plain chlorination
- B. pre-chlorination
- C. post-chlorination
- D. double chlorination. Discuss
- 7. For maximum alkalinity of water, pH value should be
Options- A. zero
- B. less than 7
- C. more than 7
- D. 14
- E. 21 Discuss
- 8. The strainer type tube well, is unsuitable for
Options- A. coarse gravels
- B. fine sandy strata
- C. clean gravels
- D. none of these. Discuss
- 9. The four major water supply distribution systems, are
Options- A. dead end, tree, grid iron and reticulation
- B. dead end, tree, grid iron and circular
- C. tree, grid iron, ring and radial
- D. tree, reticulation, circular and ring. Discuss
- 10. Critical time for developing a water hammer, is the time required for
Options- A. closing the valve
- B. the wave to travel from valve to the reservoir
- C. the wave to travel from the valve to the reservoir and back
- D. none of these. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: 3 m
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: galvanised iron pipes
Correct Answer: post-chlorination
Correct Answer: 14
Correct Answer: fine sandy strata
Correct Answer: tree, grid iron, ring and radial
Correct Answer: the wave to travel from the valve to the reservoir and back
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