A. Generators
B. Motors
C. Transmission line
D. Transformers
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Related Mcqs:
- Interruption of large currents by relay requires______________?
- A. arc suppressing blow out coils B. wide separation of the opened contacts C. high speed opening of contacts D. all of the above...
- To reduce short circuit fault currents are used_____________?
- A. reactors B. resistors C. capacitors D. none of the above...
- Short-circuit currents are due to_______________?
- A. single phase to ground faults B. phase to phase faults C. two phase to ground faults D. three phase faults E. any of these...
- Which of the following is the least expensive protection for overcurrent is low voltage system ?
- A. Rewireable fuse B. Isolator C. Oil circuit breaker D. Air break circuit breaker E. None of the above...
- For which of the following ratings of the transformer differential protection is recommended ?
- A. above 30 kVA. B. equal to and above 5 MVA C. equal to and above 25 MVA D. none of the above...
- For the protection of power station buildings against direct strokes the requirements are___________?
- A. interception B. interception and conduction C. interception, conduction and dissipation D. interception, conduction, dissipation and reflection E. none of the above...
- H.R.C. fuses provide best protection against________________?
- A. overload B. reverse current C. open-circuits D. short-circuits...
- Over voltage protection is recommended for______________?
- A. hydro-electric generators B. steam turbine generators C. gas turbine generators D. all of the above E. none of the above...
- Overfluxing protection is recommended for_____________?
- A. distribution transformer B. generator transformer of the power plant C. auto-transformer of the power plant D. station transformer of the power plant...
- Protection by fuses is generally not used beyond__________?
- A. 20 A B. 50 A C. 100 A D. 200 A...
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