Related Post

Objective Type Question or MCQ of Power System Protection page-1Objective Type Question or MCQ of Power System Protection page-2Objective Type Question or MCQ of Power System Protection page-3Objective Type Question or MCQ of Power System Protection page-4Objective Type Question or MCQ of Power System Protection page-5Objective Type Question or MCQ of Power System Protection page-6Objective Type Question or MCQ of Power System Protection page-7Objective Type Question or MCQ of Power System Protection page-8Objective Type Question or MCQ of B. Economics of Operation page-1Objective Type Question or MCQ of B. Economics of Operation page-2Objective Type Question or MCQ of B. Economics of Operation page-3Objective Type Question or MCQ of B. Economics of Operation page-4Objective Type Question or MCQ of B. Economics of Operation page-5Objective Type Question or MCQ of B. Economics of Operation page-6Multiple Choice Question (MCQ) of Circuit Breaker page-1Multiple Choice Question (MCQ) of Circuit Breaker page-2Multiple Choice Question (MCQ) of Circuit Breaker page-3Multiple Choice Question (MCQ) of FuseMultiple Choice Question (MCQ) of Protective Relays page-1Multiple Choice Question (MCQ) of Protective Relays page-2Multiple Choice Question (MCQ) of Protective Relays page-3Multiple Choice Question (MCQ) of Protective Relays page-4Multiple Choice Question (MCQ) of battery page-2Multiple Choice Question (MCQ) of battery page-3Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-1Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-2Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-3Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-4Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-5Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-6Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-7Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-8Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-9Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-10Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-11Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-12Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-13Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-14Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-15Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-16Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-17Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-18Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-19Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-20Multiple Choice Question (MCQ) of battery page-1Multiple Choice Question (MCQ) of Battery page-4Multiple Choice Question (MCQ) of Battery page-5Multiple Choice Question (MCQ) of Battery page-6Multiple Choice Question (MCQ) of Battery page-7Multiple Choice Question (MCQ) of Battery page-8Multiple Choice Question (MCQ) of Battery page-9Multiple Choice Question (MCQ) of Battery page-10Multiple Choice Question (MCQ) of Battery page-11Multiple Choice Question (MCQ) of Battery page-12Multiple Choice Question (MCQ) of Battery page-13Multiple Choice Question (MCQ) of battery page-14Multiple Choice Question (MCQ) of Battery page-15Multiple Choice Question (MCQ) of Battery page-16Multiple Choice Question (MCQ) of Battery page-17Multiple Choice Question (MCQ) of Battery page-18Multiple Choice Question (MCQ) of Battery page-19

Index

SymbolsTransformerRelayPower-SystemBasic-electricalACSR-ConductorCircuit-BreakerInterview-questions-of-Basic-ElectricityInterview-questions-of-transformerInsulatorCurrent-TransformerMCQMCQ-powersystemThermal-power-stationInterview-questions-of-Power-SystemPower-ElectronicsInterview-questions-of-Underground-CableInterview-questions-of-IlluminationIlluminationMCQ-of-ElectronicsMCQ-of-Basic-ElectricalMCQ-of-Transformers MCQ-of-D.C-motor MCQ-of-D.C-generatorsMCQ-Control-SystemMCQ-Measurementsmcq-of-Generation-power-systemMCQ-of-Induction-MotorMCQ-of-Transmission-DistributionMCQ-of-Electrical-MachinesMCQ-of-Alternator-and-Synchronous-MotorsMCQ-Electric-Power

Multiple Choice Question (MCQ) of Circuit Breaker page-3


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21. Air blast circuit breakers are preferred for

a) Short duty
b) Intermittent duty
c) Repeated duty
d) All of these

Ans: (c)

22. Rating of circuit breaker depends upon

a) Breaking capacity
b) Making capacity
c) Short time capacity
d) All of these

Ans: (d)

23. Phenomenon of arc interruption takes place at

a) Zero voltage
b) Zero current
c) High current
d) High voltage

Ans: (b)

24. Symmetrical breaking current is

a) Peak value of a.c. component
b) Average value of a.c. component
c) R.m.s. value of a.c. component
d) All of these

Ans: (c)

25. Over voltage may be due to

a) Lightning impulse waveform
b) 50 Hz a.c.
c) Peak value of 50 Hz a.c.
d) All of these

Ans: (d)

26. In vacuum breakers, current wave

a) Reaches its maximum value
b) Attains its r.m.s. value
c) Is chopped
d) Attains its average value

Ans: (c)

27. In oil circuit breakers, dielectric strength of oil should be

a) High
b) Low
c) Medium
d) None of these

Ans: (a)

28. Main disadvantage (s) of oil circuit breaker is that it

a) Is easily inflammable
b) May from an explosive mixture with air
c) Requires maintenance
d) All of these

Ans: (d)

29. Breaker should adjust itself to

a) Fault magnitude and time
b) Increased arc and time of quenching
c) R R R V
d) None of these

Ans: (a)

30. At higher currents, the switchgear exhibit

a) Corona effect
b) Skin effect
c) Mechanical stresses
d) Poor regulation

Ans: (b)

31. Plain circuit breaker can’t be used for voltage above

a) 400 V
b) 3.3 kV
c) 11 kV
d) 33 kV

Ans: (c)


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Related topics :

  1. Objective Type Question or MCQ of Power System Protection page-1
  2. Objective Type Question or MCQ of Power System Protection page-2
  3. Objective Type Question or MCQ of Power System Protection page-3
  4. Objective Type Question or MCQ of Power System Protection page-4
  5. Objective Type Question or MCQ of Power System Protection page-5
  6. Objective Type Question or MCQ of Power System Protection page-6
  7. Objective Type Question or MCQ of Power System Protection page-7
  8. Objective Type Question or MCQ of Power System Protection page-8
  9. Objective Type Question or MCQ of B. Economics of Operation page-1
  10. Objective Type Question or MCQ of B. Economics of Operation page-2
  11. Objective Type Question or MCQ of B. Economics of Operation page-3
  12. Objective Type Question or MCQ of B. Economics of Operation page-4
  13. Objective Type Question or MCQ of B. Economics of Operation page-5
  14. Objective Type Question or MCQ of B. Economics of Operation page-6
  15. Multiple Choice Question (MCQ) of Circuit Breaker page-1
  16. Multiple Choice Question (MCQ) of Circuit Breaker page-2
  17. Multiple Choice Question (MCQ) of Circuit Breaker page-3
  18. Multiple Choice Question (MCQ) of Fuse
  19. Multiple Choice Question (MCQ) of Protective Relays page-1
  20. Multiple Choice Question (MCQ) of Protective Relays page-2
  21. Multiple Choice Question (MCQ) of Protective Relays page-3
  22. Multiple Choice Question (MCQ) of Protective Relays page-4
  23. Multiple Choice Question (MCQ) of battery page-2
  24. Multiple Choice Question (MCQ) of battery page-3
  25. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-1
  26. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-2
  27. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-3
  28. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-4
  29. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-5
  30. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-6
  31. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-7
  32. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-8
  33. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-9
  34. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-10
  35. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-11
  36. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-12
  37. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-13
  38. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-14
  39. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-15
  40. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-16
  41. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-17
  42. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-18
  43. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-19
  44. Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-20
  45. Multiple Choice Question (MCQ) of battery page-1
  46. Multiple Choice Question (MCQ) of Battery page-4
  47. Multiple Choice Question (MCQ) of Battery page-5
  48. Multiple Choice Question (MCQ) of Battery page-6
  49. Multiple Choice Question (MCQ) of Battery page-7
  50. Multiple Choice Question (MCQ) of Battery page-8
  51. Multiple Choice Question (MCQ) of Battery page-9
  52. Multiple Choice Question (MCQ) of Battery page-10
  53. Multiple Choice Question (MCQ) of Battery page-11
  54. Multiple Choice Question (MCQ) of Battery page-12
  55. Multiple Choice Question (MCQ) of Battery page-13
  56. Multiple Choice Question (MCQ) of battery page-14
  57. Multiple Choice Question (MCQ) of Battery page-15
  58. Multiple Choice Question (MCQ) of Battery page-16
  59. Multiple Choice Question (MCQ) of Battery page-17
  60. Multiple Choice Question (MCQ) of Battery page-18
  61. Multiple Choice Question (MCQ) of Battery page-19

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