Related Topics

‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-20‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-19‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-18‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-17‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-16‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-15‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-14‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-13‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-12‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-11‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-10‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-9‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-8‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-7‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-6‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-5‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-4‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-3‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-2‣  Objective Type Question or MCQ of Electrical Circuits and Magnetic Fields page-1‣  Objective questions and answers or MCQ of Electrical Machines page-22‣  Objective questions and answers or MCQ of Electrical Machines page-21‣  Objective questions and answers or MCQ of Electrical Machines page-20‣  Objective questions and answers or MCQ of Electrical Machines page-19‣  Objective questions and answers or MCQ of Electrical Machines page-18‣  Objective questions and answers or MCQ of Electrical Machines page-17‣  Objective questions and answers or MCQ of Electrical Machines page-16‣  Objective questions and answers or MCQ of Electrical Machines page-15‣  Objective questions and answers or MCQ of Electrical Machines page-14‣  Objective questions and answers or MCQ of Electrical Machines page-13‣  Objective questions and answers or MCQ of Electrical Machines page-12‣  Objective questions and answers or MCQ of Electrical Machines page-11‣  Objective questions and answers or MCQ of Electrical Machines page-10‣  Objective questions and answers or MCQ of Electrical Machines page-9‣  Objective questions and answers or MCQ of Electrical Machines page-8‣  Objective questions and answers or MCQ of Electrical Machines page-7‣  Objective questions and answers or MCQ of Electrical Machines page-6‣  Multiple Choice Question (MCQ) of Protective Relays page-4‣  Multiple Choice Question (MCQ) of Protective Relays page-3‣  Multiple Choice Question (MCQ) of Protective Relays page-2‣  Multiple Choice Question (MCQ) of Protective Relays page-1‣  Multiple Choice Question (MCQ) of Fuse‣  Multiple Choice Question (MCQ) of Circuit Breaker page-3‣  Multiple Choice Question (MCQ) of Circuit Breaker page-2‣  Multiple Choice Question (MCQ) of Circuit Breaker page-1‣  Objective Type Question or MCQ of B. Economics of Operation page-6‣  Objective Type Question or MCQ of B. Economics of Operation page-5‣  Objective Type Question or MCQ of B. Economics of Operation page-4‣  Objective Type Question or MCQ of B. Economics of Operation page-3‣  Objective Type Question or MCQ of B. Economics of Operation page-2‣  Objective Type Question or MCQ of B. Economics of Operation page-1‣  Objective Type Question or MCQ of Power System Protection page-8‣  Objective Type Question or MCQ of Power System Protection page-7‣  Objective Type Question or MCQ of Power System Protection page-6‣  Objective Type Question or MCQ of Power System Protection page-5‣  Objective Type Question or MCQ of Power System Protection page-4‣  Objective Type Question or MCQ of Power System Protection page-3‣  Objective Type Question or MCQ of Power System Protection page-2‣  Objective Type Question or MCQ of Power System Protection page-1‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-11‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-10‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-9‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-8‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-7‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-6‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-5‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-4‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-3‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-2‣  Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-1

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-Distribution

Multiple Choice Question (MCQ) of Alternator and Synchronous Motors page-5

41. The maximum current that can be supplied by an alternator depends on

a) Number of poles
b) Speed of the exciter
c) Exciter current
d) Strength of the magnetic field

Ans: (d)

42. For the same power rating, an alternator operating at lower voltage will be

a) Less noisy
b) Costlier
c) Larger in size
d) More efficient

Ans: (c)

43. In alternators, the distribution factor is defined as the ratio of emfs of

a) Concentrated winding to distributed winding
b) Distributed winding to full pitch winding
c) Full pitch winding to distributed winding
d) Distributed winding to concentrated winding

Ans: (b)

44. The following path play important role in over speed protection of an alternator

a) Governor
b) Differential protection
c) Alarm
d) Overcurrent relay

Ans: (a)

45. In large synchronous generators, protection provided against external faults is

a) Inter-turn fault protection
b) Sensitive earth fault protection
c) Biased differential protection
d) All of these

Ans: (d)

46. Unbalanced 3-phase stator currents in an alternator cause

a) Heating of rotor
b) Vibrations
c) Double frequency currents in the rotor
d) All of these

Ans: (d)

47. Permissible variation in supply frequency of alternators is

a) ± 1%
b) ± 2%
c) ± 4%
d) ± 6%

Ans: (b)

48.In a synchronous alternator, armature reaction is solely determined by

a) Power factor of the load
b) Amount of current drawn from the alternator
c) Speed of the prime mover driving the alternator

d) None of these

Ans: (a)

49. For zero factor leading, the effect of armature reaction in an alternator on the main flux is

a) Magnetizing
b) Demagnetizing
c) Cross-magnetizing
d) None of these

Ans: (a)

50. The emf generated in an alternator due to nth harmonic is

a) N times the fundamental emf
b) Equal to the fundamental emf
c) Less than the fundamental emf
d) Zero

Ans: (c)

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