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- Question
Shales are
Options- A. porous
- B. permeable
- C. porous and permeable
- D. porous but not permeable
- E. neither porous nor permeable.
- Correct Answer
- porous but not permeable
- 1. The rate of silting in a reservoir
Options- A. is less in the beginning
- B. remains constant throughout
- C. is more in the beginning
- D. is more in the beginning and reduces in the end
- E. none of these. Discuss
- 2. Detention time for plain sedimentation tank usually ranges from
Options- A. 2 to 4 hours
- B. 4 to 8 hours
- C. 6 to 10 hours
- D. 8 to 12 hours
- E. 12 to 16 hours. Discuss
- 3. Pick up the correct statement from the following :
Options- A. If ports are closed, the dry intake towers will not have any water
- B. Even if ports are closed, the wet intake tower will have water filled up to reservoir level
- C. The dry intake towers are generally constructed with heavier construction to resist buoyant forces
- D. No buoyant force acts on wet intake towers
- E. All the above. Discuss
- 4. Velocity of flow of water in plain sedimentation water tank, is normally kept
Options- A. 3 cm/minute
- B. 10 cm/minute
- C. 20 cm/minute
- D. 30 cm/minute
- E. 40 cm/minute. Discuss
- 5. The type of joint generally used in cast iron pipes, is
Options- A. socket and spigot joint
- B. flanged joint
- C. dresser coupling joint
- D. flexible joint
- E. all the above. Discuss
- 6. Manholes are less common in
Options- A. cast iron pipes
- B. steel pipes
- C. hume steel pipes
- D. R.C.C. pipes. Discuss
- 7. Pipes are laid parallel
Options- A. to increase the capacity of the water supply
- B. to provide a means of repairing without closing water supply
- C. to meet the requirement of excessive supply
- D. all the above. Discuss
- 8. Pick up the correct statement from the following :
Options- A. The water level in a still well, represents the ground water table level
- B. The difference between water table level and the water level in a well after pumping, is called depression head
- C. The surface of water table surrounding a well during pumping, forms a cone of depression
- D. The distance from the centre of the well up to the place where level of water table is not affected, is called radius of influence
- E. All the above. Discuss
- 9. To remove very fine suspended particles from water, the method adopted is
Options- A. screening
- B. sedimentation
- C. boiling
- D. filtration. Discuss
- 10. Gravity conduits are generally in the form of
Options- A. canals
- B. flumes
- C. aqueduct
- D. tunnels
- E. all the above. Discuss
Water Supply Engineering problems
Search Results
Correct Answer: is more in the beginning and reduces in the end
Correct Answer: 4 to 8 hours
Correct Answer: All the above.
Correct Answer: 30 cm/minute
Correct Answer: all the above.
Correct Answer: cast iron pipes
Correct Answer: all the above.
Correct Answer: All the above.
Correct Answer: filtration.
Correct Answer: all the above.
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