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- Question
A high velocity of wash water is required for
Options- A. rapid gravity filter with strainers
- B. rapid gravity filter without strainers
- C. slow sand filter with strainers
- D. slow sand filter without strainers
- E. none of these.
- Correct Answer
- rapid gravity filter without strainers
- 1. According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required for
Options- A. Boarding schools
- B. Nurses home and medical quarters
- C. hostels
- D. all the above. Discuss
- 2. The maximum depth of sedimentation tanks is limited to
Options- A. 2 m
- B. 3 m
- C. 4 m
- D. 5 m
- E. 6 m. Discuss
- 3. For determining the velocity of flow of underground water, the most commonly used non-empirical formula is
Options- A. Darcy's formula
- B. Slichter's formula
- C. Hazen's formula
- D. Lacy's formula. Discuss
- 4. If pH value of water is
Options- A. 7 water it is said to be neutral
- B. less than 7 it is said to be acidic
- C. more than 7 it is said to be alkaline
- D. all the above. Discuss
- 5. The yield of a rapid gravity filter as compared to that of slow sand filter, is
Options- A. 10 times
- B. 15 times
- C. 20 times
- D. 30 times
- E. 35 times. Discuss
- 6. Aeration of water is done to remove
Options- A. odour
- B. colour
- C. bacterias
- D. hardness
- E. turbidity. Discuss
- 7. The maximum permissible nitrites in public water supplies, is
Options- A. Nil
- B. 0.5 P.P.M.
- C. 1.0. P.P.M.
- D. 1.5 P.P.M.
- E. 200 P.P.M. Discuss
- 8. According to Kuichling's formula, fire demand in litres per minute for a population of P thousands, is
Options- A. 3182 P
- B.
- C. 4637 P [1 - 0.01 P]
- D. 5663 P. Discuss
- 9. Pick up the incorrect statement from the following regarding fire hydrants
Options- A. Fire hydrants are fitted in water mains at 100 m to 150 m apart at fire
- B. The minimum water pressure hydrants, is kept 1.5 kg/cm2
- C. The water at pressure 1 to 1.5 kg/cm2 is made available for 4 to 5 hours for constant use
- D. None of these. Discuss
- 10. Economic height of a dam is the height corresponding to which
Options- A. cost of the dam per unit of storage is minimum
- B. amount of silting is less
- C. cost of dam per unit storage is maximum
- D. free board provided is least
- E. none of these. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: all the above.
Correct Answer: 6 m.
Correct Answer: Darcy's formula
Correct Answer: all the above.
Correct Answer: 30 times
Correct Answer: odour
Correct Answer: Nil
Correct Answer: 3182 P
Correct Answer: None of these.
Correct Answer: cost of the dam per unit of storage is minimum
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