Water Supply Engineering problems
- 1. Well treated water is generally supplied for
Options- A. domestic use
- B. commercial use
- C. public use
- D. waste water
- E. all the above. Discuss
Correct Answer: all the above.
- 2. The formula Q = P - K[1.8T + 32] in which Q is runoff, P is annual rain fall in cm, T is mean annual temperature in centigrades and K is a constant, is known
Options- A. Justin's formula
- B. Khosla's formula
- C. English formula
- D. Vermule's formula. Discuss
Correct Answer: Khosla's formula
- 3. Pick up the incorrect statement from the following :
Options- A. Water disinfected with ozone is free from any odour
- B. Ozone removes bacterias as well as colour and odour
- C. ozonised water becomes tasteless
- D. None of these. Discuss
Correct Answer: ozonised water becomes tasteless
- 4. A well is considered to be good if it is sunk into
Options- A. Clay
- B. Sand
- C. Coarse gravel
- D. Silt. Discuss
Correct Answer: Coarse gravel
- 5. Gravity conduits
Options- A. carry water under gravity
- B. follow the hydraulic gradient line
- C. are carried on trestles in valleys and depressions
- D. are carried through tunnels in deep cuttings
- E. All the above. Discuss
Correct Answer: All the above.
- 6. Hardness of water is caused by
Options- A. presence of soap lather
- B. presence of chlorides and sulphates of sodium and potassium
- C. presence of bicarbonates, sulphates or chlorides of calcium and magnesium
- D. turbidity. Discuss
Correct Answer: presence of bicarbonates, sulphates or chlorides of calcium and magnesium
- 7. The ratio of the maximum daily consumption to the average daily demand, is
Options- A. 1.0
- B. 1.2
- C. 1.4
- D. 1.6
- E. 1.8 Discuss
Correct Answer: 1.8
- 8. The process of passing water through beds of granular materials, is called
Options- A. screening
- B. sedimentation
- C. filtration
- D. none of these. Discuss
Correct Answer: filtration
- 9. If L, B and D length, breadth and depth of water in a rectangular sedimentation tank of total discharge Q, the settling velocity, is
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 10. If n is porosity, y is specific yield and r is specific retention of any soil, the relationship which holds good, is
Options- A. n + y + r = 1
- B. n + y = r
- C. n + r = y
- D. y + r = n
- E. n + r + y = 0 Discuss
Correct Answer: y + r = n
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