Water Supply Engineering problems
- 1. The transitional middle portion of a logistic curve follows
Options- A. a geometric growth
- B. a logarithmic growth
- C. a first over curve
- D. a constant rate. Discuss
Correct Answer: a constant rate.
- 2. Most satisfactory formula for an estimate of fire demand Q for a city of population P in thousands for Indian conditions, is
Options- A.
- B. Q = 1640 P (1 - 0.01 P)
- C. Q = 3180 P
- D. none of these. Discuss
Correct Answer: Q = 3180 P
- 3. Water supply system includes
Options- A. digging a well for water
- B. construction of dams
- C. construction of canals
- D. entire arrangement from source to distribution. Discuss
Correct Answer: entire arrangement from source to distribution.
- 4. Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be
Options- A. nil
- B. 5
- C. 10
- D. 15
- E. 20 Discuss
Correct Answer: nil
- 5. Turbidity of raw water is a measure of
Options- A. suspended solids
- B. acidity of water
- C. B.O.D.
- D. none of these. Discuss
Correct Answer: suspended solids
- 6. The fire demand of a city may be worked out by
Options- A. Kuichling's formula
- B. Freeman formula
- C. Under Writers formula
- D. Bustan's formula
- E. All the above. Discuss
Correct Answer: All the above.
- 7. Most commonly used pump for lifting water in water supply mains, is
Options- A. axialflow pump
- B. reciprocating pump
- C. rotary type pump
- D. centrifugal pumps
- E. none of these. Discuss
Correct Answer: axialflow pump
- 8. Surge tanks are used
Options- A. for storage water
- B. to increase the velocity in a pipeline
- C. as overflow valves
- D. to guard against water hammer. Discuss
Correct Answer: to guard against water hammer.
- 9. Asbestos pipes are
Options- A. light in weight and easy to transport
- B. highly resistant to corrosion
- C. high flexible to accommodate deflection upto 12°
- D. very much smooth and hydraulically efficient
- E. all the above. Discuss
Correct Answer: all the above.
- 10. Hard water for public water supply is discarded because
Options- A. it consumes more soap
- B. it contains lot of turbidity
- C. it contains pathogenic bacterias
- D. it possesses bad taste and odour
- E. none of these. Discuss
Correct Answer: it consumes more soap
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