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- Question
The equation
in which Q is yearly run off in cm, P is yearly total rainfall in cm, H is difference of R.L.s. of lowest and highest points and A is area of catchment in square metres, is known as
Options- A. English formula
- B. Khosla's formula
- C. Justin's formula
- D. Vermule's formula.
- Correct Answer
- Justin's formula
- 1. The main draw-back of centrifugal pump, is
Options- A. necessity of priming
- B. discharge from pump varies with the load of water
- C. for high heads, efficiency is low up to 50%
- D. the suction lift is limited to 6 m
- E. all the above. Discuss
- 2. Disinfection of water with ozone is not good because
Options- A. it vanishes before water reaches the consumers
- B. it removes the colour, taste and odour from water as bacterias
- C. it adds taste to the water
- D. it is more efficient than chlorine in killing bacterias
- E. none of these. Discuss
- 3. The main process to purify water by filtration, is
Options- A. mechanical straining
- B. flocculation and sedimentation
- C. biological metabolism
- D. electronic change
- E. all the above. Discuss
- 4. Pick up the correct statement from the following :
Options- A. The internal pressure within a pipe, is caused due to water head and hammer pressure
- B. The internal pressure in a pipe running full is equal to vertical ordinate between hydraulic gradient line and centre of the pipe
- C. In pressure pipes with water at rest, the pressure is equal to water head
- D. Sudden closure of a valve, causes the water hammer pressure
- E. All the above. Discuss
- 5. Quality of water is said to be good if it is
Options- A. free from suspended matter
- B. colourless
- C. free from pathogenic organism
- D. tasteless
- E. all the above. Discuss
- 6. A pressure conduit laid under ground, may not be subjected to
Options- A. internal pressure of water
- B. pressure due to external load
- C. longitudinal temperature stress
- D. longitudinal stresses due to unbalanced pressure to bends
- E. none of these. Discuss
- 7. The best process of disinfection of public water supply, is by
Options- A. boiling
- B. chlorination
- C. adding lime
- D. adding zone. Discuss
- 8. E. Coli bacterias die in water having pH greater than
Options- A. 5.5
- B. 6.5
- C. 7.5
- D. 8.5
- E. 9.5 Discuss
- 9. The water level in an open well was depressed by pumping 2.5 m and recuperated 2.87 m in 3 hours and 50 minutes. The yield of the well per minute is
Options- A. 0.0033
- B. 0.0044
- C. 0.0055
- D. 0.0066 Discuss
- 10. Mathamoglobinemia, or blue baby disease is caused due to
Options- A. chlorides
- B. nitrites
- C. nitrates
- D. sulphides. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: all the above.
Correct Answer: it is more efficient than chlorine in killing bacterias
Correct Answer: all the above.
Correct Answer: All the above.
Correct Answer: all the above.
Correct Answer: longitudinal temperature stress
Correct Answer: chlorination
Correct Answer: 9.5
Correct Answer: 0.0055
Correct Answer: nitrates
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