Related Topics

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page-19  Multiple Choice Question (MCQ) of Measurements page-18  Multiple Choice Question (MCQ) of Measurements page-17  Multiple Choice Question (MCQ) of Measurements page-16  Multiple Choice Question (MCQ) of Measurements page-15  Multiple Choice Question (MCQ) of Measurements page-14  Multiple Choice Question (MCQ) of Measurements page-13  Multiple Choice Question (MCQ) of Measurements page-12  Multiple Choice Question (MCQ) of Measurements page-11  Multiple Choice Question (MCQ) of Measurements page-10  Multiple Choice Question (MCQ) of Measurements page-9  Multiple Choice Question (MCQ) of Measurements page-8  Multiple Choice Question (MCQ) of Measurements page-7  Multiple Choice Question (MCQ) of Measurements page-6  Multiple Choice Question (MCQ) of Measurements page-5  Multiple Choice Question (MCQ) of Measurements page-4  Multiple Choice Question (MCQ) of Measurements page-3  Multiple Choice Question (MCQ) of Measurements page-2  Multiple Choice Question (MCQ) of Measurements 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 Control Systems page-10  Multiple Choice Question (MCQ) of Control Systems page-9  Multiple Choice Question (MCQ) of Control Systems page-8  Multiple Choice Question (MCQ) of Control Systems page-7  Multiple Choice Question (MCQ) of Control Systems page-6  Multiple Choice Question (MCQ) of Control Systems page-5  Multiple Choice Question (MCQ) of Control Systems page-4  Multiple Choice Question (MCQ) of Control Systems page-3  Multiple Choice Question (MCQ) of Control Systems page-2  Multiple Choice Question (MCQ) of Control Systems page-1  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 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Machines page-10  Multiple Choice Question (MCQ) of D.C. Machines page-9  Multiple Choice Question (MCQ) of D.C. Machines page-8  Multiple Choice Question (MCQ) of D.C. Machines page-7  Multiple Choice Question (MCQ) of D.C. Machines page-6  Multiple Choice Question (MCQ) of D.C. Machines page-5  Multiple Choice Question (MCQ) of D.C. Machines page-4  Multiple Choice Question (MCQ) of D.C. Machines page-3  Multiple Choice Question (MCQ) of D.C. Machines page-2  Multiple Choice Question (MCQ) of D.C. Machines page-1  MCQ of D.C generators page-11  MCQ of D.C generators page-10  MCQ of D.C generators page-9  MCQ of D.C generators page-8  MCQ of D.C generators page-7  MCQ of D.C generators page-6  MCQ of D.C generators page-5

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-generators

Objective Type Question or MCQ of Power System Protection page-3

21. Buchholz relays are used for transformers of ratings above

a) 100 kV
b) 200 kV
c) 500 kV
d) 1000 kV

Ans: (c)

22. The voltage appearing across the contacts after the opening of the circuit breaker is called

a) Arc voltage
b) Recovery voltage
c) Surge voltage
d) Break open voltage

Ans: (b)

23. Air blasty circuit breaker is operated at a pressure of

a) 5 to 10 kg/cm2
b) 10 to 15 kg/cm2
c) 15 to 20 kg/cm2
d) 20 to 30 kg/cm2

Ans: (d)

24. The basic problem in a circuit breaker is to

a) Maintain the arc
b) Emit ionization electrons
c) Extinguish the arc
d) None of these

Ans: (c)

25. In oil and air blast circuit breakers, the current zero interruption is attained by

a) Lengthening of arc
b) Cooling and blast effect
c) Deionizing the oil with forced air
d) Both (a) and (b) above

Ans: (d)

26. Buchholz relay is used for the protection of

a) Alternators
b) Transformers
c) Switch yard
d) Transmission lines

Ans: (b)

27. Which of the following is a directional relay?

a) Reactance relay
b) Mho relay
c) Reactance relay
d) Both (b) and (c)

Ans: (d)

28. Which of the following is an instantaneous relay?

a) Induction type
b) Shaded pole type
c) Thermocouple type
d) Permanent magnet moving coil type

Ans: (d)

29. which of the following is not an instant-neous relay?

a) Polarized type
b) Balance beam type
c) Hinged armature type
d) Induction disc type

Ans: (d)

30. Directional relays respond to the

a) Voltage polarities
b) Flow of current
c) Flow of power
d) All of these

Ans: (c)

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  40. Multiple Choice Question (MCQ) of Measurements page-5
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  44. Multiple Choice Question (MCQ) of Measurements page-1
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  46. Objective questions and answers or MCQ of Electrical Machines page-21
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  53. Objective questions and answers or MCQ of Electrical Machines page-14
  54. Objective questions and answers or MCQ of Electrical Machines page-13
  55. Objective questions and answers or MCQ of Electrical Machines page-12
  56. Objective questions and answers or MCQ of Electrical Machines page-11
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  81. Multiple Choice Question (MCQ) of C. Power System Protection page-4
  82. Multiple Choice Question (MCQ) of C. Power System Protection page-3
  83. Multiple Choice Question (MCQ) of C. Power System Protection page-2
  84. Multiple Choice Question (MCQ) of C. Power System Protection page-1
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  88. Objective Type Question or MCQ of B. Economics of Operation page-3
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  100. Objective Type Question or MCQ of Transmission and Distribution page-23
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  105. Objective Type Question or MCQ of Transmission and Distribution page-18
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  107. Objective Type Question or MCQ of Transmission and Distribution page-16
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  115. Objective Type Question or MCQ of Transmission and Distribution page-8
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  169. MCQ of D.C generators page-10
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