Discussion
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- Question
An earth formation which, although porous and capable of absoring water does not provide an appreciable supply to wells, is known as
Options- A. acquifer
- B. aquiclude
- C. aquifuge
- D. none of these.
- Correct Answer
- aquiclude
- 1. Mathamoglobinemia, or blue baby disease is caused due to
Options- A. chlorides
- B. nitrites
- C. nitrates
- D. sulphides. Discuss
- 2. 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
- 3. 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
- 4. The best process of disinfection of public water supply, is by
Options- A. boiling
- B. chlorination
- C. adding lime
- D. adding zone. Discuss
- 5. 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
- 6. Pick up the incorrect statement from the following :
Options- A. An impervious layer a few metres below the water table in the sub-soil, is generally called Mota layer (6) Mota layer is very useful to give structural support to open deep wells
- B. A bore hole is generally provided in the mota layer for deep wells
- C. Shallow wells are always of less depth as compared to deep wells
- D. None of these. Discuss
- 7. The force which develops in a pressure conduit supported on trestles, is
Options- A. tension
- B. compression
- C. temperature stress
- D. flexural stress. Discuss
- 8. Surface water is obtained from
Options- A. well
- B. springs
- C. artesian well
- D. rain. Discuss
- 9. Pick up the correct statement from the following regarding the pressure conduits :
Options- A. Pressure conduits are permitted to run
th full - B. Pressure conduits are always laid along down grades
- C. The hydraulic gradient line always coincides the invert of the conduit
- D. None of these. Discuss
- 10. Pick up the correct statement from the following regarding radial flow centrifugal pumps :
Options- A. These are provided with volute type or turbine type casings
- B. In involute type of radial flow centrifugal pump, the impeller discharges into a gradually expanding spiral casing
- C. In turbine type of radial flow centrifugal pumps, the impeller is surrounded by stationary guide vanes to reduce the velocity of water
- D. The efficiency of turbine type of radial flow centrifugal pump, is always higher than that of volute type
- E. All the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: nitrates
Correct Answer: 0.0055
Correct Answer: 9.5
Correct Answer: chlorination
Correct Answer: longitudinal temperature stress
Correct Answer: None of these.
Correct Answer: flexural stress.
Correct Answer: rain.
Correct Answer: None of these.
Correct Answer: All the above.
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