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- Question
Water may contain
Options- A. bicarbonate alkalinity
- B. carbonate alkalinity
- C. hydroxide alkalinity
- D. caustic alkalinity
- E. all the above.
- Correct Answer
- all the above.
- 1. For the same draw down in two observations wells at distances r1 and r2, the times after start of pumping are t1 and t2 hours respectively. The relation which holds good is
Options- A.
- B.
- C.
- D.
- E. none of these. Discuss
- 2. The valve fitted closely in a recess against an opening in a pipe, is generally
Options- A. wedge shaped circular disc
- B. spherical disc
- C. parallelopiped disc
- D. conical shaped circular disc. Discuss
- 3. For calculation of economical diameter D of a pipe in metres for a discharge Q to be pumped in cumecs, Lea suggested the empirical formula
Options- A. D = 0.22 Q
- B. D = 1.22 Q
- C. D = 2.22 Q
- D. D = 3.22 Q
- E. D = 1.33 Q. Discuss
- 4. When gravity and pumping systems of water distribution are adopted, the type of distribution reservoir, is
Options- A. elevated tank
- B. ground source reservoir
- C. intz tank
- D. stand pipe. Discuss
- 5. The average domestic consumption under normal conditions in an Indian city per day per person, is
Options- A. 105 litres
- B. 115 litres
- C. 125 litres
- D. 135 litres
- E. 150 litres. Discuss
- 6. Higher yield may be expected from
Options- A. gravity springs
- B. surface springs
- C. artesian springs
- D. all the above. Discuss
- 7. The level of underground water is called
Options- A. water level
- B. water table
- C. negative level
- D. invert level. Discuss
- 8. Rapid gravity filters can remove bacterial impurities up to a maximum of
Options- A. 50%
- B. 60%
- C. 70%
- D. 80%
- E. 90%. Discuss
- 9. m and n are monsoon duration factor and catchment factor respectively. If P is yearly rainfall in cm, runoff can be calculated by
Options- A. velocity area method
- B. weir or spillway method
- C. use of venturi-meter
- D. using power plant consumption
- E. none of these. Discuss
- 10. Pick up the incorrect statement from the following :
Options- A. The water entering the slow sand filters should be treated by 9.386 coagulants
- B. The depth of water on the filter should be twice the depth of the filter sand
- C. When the filter head is 0.75 times the depth of filter sand, the water obtained is purest
- D. The cleaning of slow sand filters is done by back washing
- E. All the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer:
Correct Answer: wedge shaped circular disc
Correct Answer: D = 1.22 Q
Correct Answer: elevated tank
Correct Answer: 135 litres
Correct Answer: artesian springs
Correct Answer: water table
Correct Answer: 80%
Correct Answer: velocity area method
Correct Answer: All the above.
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