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- Question
Before constructing a dam, the factor to be considered for controlling sedimentation, is
Options- A. selection of dam site
- B. construction of check dams
- C. providing vegetation screens
- D. providing under-sluices in the dam
- E. All the above.
- Correct Answer
- All the above.
- 1. The permissible amount of nitrites present in potable water, is
Options- A. 10 ppm
- B. 15 ppm
- C. 20 ppm
- D. 45 ppm
- E. Nil. Discuss
- 2. Recuperation test is carried out to determine
Options- A. turbidity of water
- B. pH value of water
- C. yield of well
- D. discharge from a well. Discuss
- 3. Turbidity of water is expressed
Options- A. in ppm
- B. in numbers in an arbitrary scale
- C. by pH value
- D. by colour code. Discuss
- 4. Detention period of a settling tank is
Options- A. average theoretical time required for water to flow through the tank
- B. time required for flow of water to fill the tank fully
- C. average time for which water is retained in tank
- D. ratio of volume of basin of a sedimentation tank to the rate of flow
- E. all the above. Discuss
- 5. If Q is discharge is cubicmetres per sec and D is the economical diameter of the pipe. According to Lea
Options- A. D = 0.67 to 0.87 Q
- B. D = 0.77 to 0.97 Q
- C. D = 0.97 to 1.22 Q
- D. D = 1.22 to 1.33 Q. Discuss
- 6. A slow sand filter is cleaned if its filter head is higher than
Options- A. 10 cm to 20 cm
- B. 20 cm to 40 cm
- C. 40 cm to 70 cm
- D. 70 cm to 120 cm
- E. 120 cm to 150 cm. Discuss
- 7. Normal values of overflow rate for plain sedimentation tank using coagulants, is
Options- A. 750 to 1000 litres/hr/m2
- B. 1000 to 1250 litres/hr/m2
- C. 1250 to 1500 litres/hr/m2
- D. 1500 litres/hr/m2. Discuss
- 8. If the specific capacity of a well is 0.3183 x 10-3 per sec, the discharge from a well of 4 m diameter under a depression head of 4 m, is
Options- A. 8 litres/sec
- B. 10 litres/sec
- C. 12 litres/sec
- D. 14 litres/sec
- E. 16 litres/sec. Discuss
- 9. The maximum pressure to which a pipe is subjected to during its operation, is known
Options- A. working pressure
- B. design pressure
- C. test pressure
- D. pipe pressure
- E. all the above. Discuss
- 10. The factor to be considered for the source of city water supply, is
Options- A. quantity and quality of the available water
- B. elevation of the source of water
- C. general terrain intervening the area
- D. all the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: Nil.
Correct Answer: yield of well
Correct Answer: in ppm
Correct Answer: all the above.
Correct Answer: D = 0.97 to 1.22 Q
Correct Answer: 70 cm to 120 cm
Correct Answer: 1000 to 1250 litres/hr/m2
Correct Answer: 16 litres/sec.
Correct Answer: working pressure
Correct Answer: all the above.
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