Water Supply Engineering problems
- 1. Perched acquifers are generally found
Options- A. on the surface of the ground
- B. below the surface of the ground but above water table
- C. below the water table
- D. all the above. Discuss
Correct Answer: below the surface of the ground but above water table
- 2. Water to the consumers may be supplied from
Options- A. infiltration galleries connected to sump well
- B. infiltration well dug out on the banks of rivers
- C. ranney wells sunk to the water level
- D. all the above. Discuss
Correct Answer: all the above.
- 3. A strainer type well sunk through three pervious layers intervened by three impervious aquicludes, draws water from
Options- A. top most pervious layer
- B. central pervious layer
- C. lowest pervious layer
- D. all the pervious layers. Discuss
Correct Answer: all the pervious layers.
- 4. If the average daily demand of a city of 50, 000 population, is 20 m.l.d., the maximum daily demand is
Options- A. 24 mld
- B. 30 mld
- C. 36 mld
- D. 54 mld. Discuss
Correct Answer: 36 mld
- 5. Steel pipe are
Options- A. suitable for withstanding high internal pressure
- B. connected by riveted or welded joints
- C. generally laid under ground and no expansion joint is required
- D. likely to last 100 years under ordinary conditions
- E. None of these. Discuss
Correct Answer: likely to last 100 years under ordinary conditions
- 6. Alum is chemically
Options- A. Copper sulphate
- B. Aluminium sulphate
- C. Ferrous sulphate
- D. Ferric sulphate. Discuss
Correct Answer: Aluminium sulphate
- 7. The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
Options- A. conversion into crystals
- B. it from burning
- C. it from explosion
- D. none of these. Discuss
Correct Answer: conversion into crystals
- 8. The ratio of discharge and plan area of a continuous flow type settling tank, is known
Options- A. surface loading
- B. overflow
- C. overflow rate
- D. all the above. Discuss
Correct Answer: all the above.
- 9. Yield of a drainage basin is :
Options- A. run off of the area expressed as instantaneous rate
- B. average run off over a short period
- C. total volume of water flowing annually
- D. all the above. Discuss
Correct Answer: total volume of water flowing annually
- 10. The nitrate concentration in domestic water supplies, is generally limited to
Options- A. 10 ppm
- B. 15 ppm
- C. 25 ppm
- D. 30 ppm
- E. 45 ppm. Discuss
Correct Answer: 45 ppm.
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