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Water Supply Engineering
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Question
Increase in population of a rapidly growing city, may be estimated by
Options
A. arithmetical mean method
B. geometrical method
C. incremental increase method
D. graphical comparison method.
Correct Answer
geometrical method
Water Supply Engineering problems
Search Results
1. A city supply includes
Options
A. domestic water demand
B. industrial and commercial water demands
C. demand for public uses and fire
D. water losses
E. all the above.
Show Answer
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Discuss
Correct Answer: all the above.
2. Continuous flow of water can be expected from
Options
A. gravity springs
B. surface springs
C. artesian springs
D. none of these.
Show Answer
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Discuss
Correct Answer: artesian springs
3. 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.
Show Answer
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Correct Answer: All the above.
4. 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.
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Correct Answer: None of these.
5. Surface water is obtained from
Options
A. well
B. springs
C. artesian well
D. rain.
Show Answer
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Discuss
Correct Answer: rain.
6. Flow through period, in sedimentation tanks, is
Options
A. equal to detention period
B. more than detention period
C. less than detention period
D. detention period divided by displacement efficiency
E. none of these.
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Correct Answer: less than detention period
7. The period of cleaning of a slow sand filter, is usually
Options
A. 5 to 10 days
B. two weeks to three weeks
C. one month to three months
D. three months to six months
E. one year.
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Correct Answer: one month to three months
8. To detect the turbidity of the order of 0 to 1000 P.P.M. the instrument used is
Options
A. turbidimeter
B. Jackson turbidimeter
C. Baylis turbidimeter
D. Hallige turbidimeter.
Show Answer
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Correct Answer: Baylis turbidimeter
9. Sluice valves are fitted in a distribution system
Options
A. along straight length of pipes at suitable intervals
B. at the junctions of the pipes
C. at the branching off points of sub-mains
D. all the above.
Show Answer
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Correct Answer: all the above.
10. The lowest outlet sluice in a dam is provided
Options
A. below the dead storage
B. on the top level of dead storage
C. on the top level of useful storage
D. at the centre of the dam.
Show Answer
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Correct Answer: on the top level of dead storage
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