Water Supply Engineering problems
- 1. The storage capacity of a reservoir may be divided into three zones. The lowest zone is
Options- A. Dead storage
- B. Useful storage
- C. Surcharge storage
- D. None of these. Discuss
Correct Answer: Dead storage
- 2. If P is population of a city in thousands and Q is fire demand in litres per minute, for proper estimate of water, the Empirical formula
is suggested by
Options- A. National Board of fire under-writers
- B. Freeman
- C. Kuichling
- D. None of these. Discuss
Correct Answer: Freeman
- 3. Pick up the incorrect statement from the following. The source of surface water is from
Options- A. streams and rivers
- B. storage reservoirs
- C. springs
- D. ponds and lakes
- E. none of these. Discuss
Correct Answer: springs
- 4. Estimates of a water supply project depends upon the rate of water supply per capita consumption and probable population estimated at the end of the design period of
Options- A. 5 to 10 years
- B. 10 to 15 years
- C. 15 to 20 years
- D. 20 to 30 years
- E. 25 years. Discuss
Correct Answer: 20 to 30 years
- 5. Surcharge storage zone of a reservoir, is
Options- A. below dead storage
- B. between dead storage and useful storage
- C. above useful storage
- D. also known as valley storage. Discuss
Correct Answer: above useful storage
- 6. In a rapid gravity filter
Options- A. raw water from the source is supplied
- B. disinfected raw water is supplied
- C. raw water passed through coagulation tank is supplied
- D. none of these. Discuss
Correct Answer: raw water passed through coagulation tank is supplied
- 7. Surface water may
Options- A. contain large amount of impurities
- B. be contaminated by impurities
- C. contain disease producing bacterias
- D. all the above. Discuss
Correct Answer: all the above.
- 8. 135 litres of water per person per day, is provided in
Options- A. nurses homes
- B. hostels
- C. residential schools
- D. all the above. Discuss
Correct Answer: all the above.
- 9. The type of joint generally used in cast iron pipes, is
Options- A. socket and spigot joint
- B. flanged joint
- C. dresser coupling joint
- D. flexible joint
- E. all the above. Discuss
Correct Answer: all the above.
- 10. Velocity of flow of water in plain sedimentation water tank, is normally kept
Options- A. 3 cm/minute
- B. 10 cm/minute
- C. 20 cm/minute
- D. 30 cm/minute
- E. 40 cm/minute. Discuss
Correct Answer: 30 cm/minute
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