Related Topics

‣  Objective Type Question or MCQ of Transmission and Distribution page-24‣  Objective Type Question or MCQ of Transmission and Distribution page-23‣  Objective Type Question or MCQ of Transmission and Distribution page-22‣  Objective Type Question or MCQ of Transmission and Distribution page-21‣  Objective Type Question or MCQ of Transmission and Distribution page-20‣  Objective Type Question or MCQ of Transmission and Distribution page-19‣  Objective Type Question or MCQ of Transmission and Distribution page-18‣  Objective Type Question or MCQ of Transmission and Distribution page-17‣  Objective Type Question or MCQ of Transmission and Distribution page-16‣  Objective Type Question or MCQ of Transmission and Distribution page-15‣  Objective Type Question or MCQ of Transmission and Distribution page-14‣  Objective Type Question or MCQ of Transmission and Distribution page-13‣  Objective Type Question or MCQ of Transmission and Distribution page-12‣  Objective Type Question or MCQ of Transmission and Distribution page-11‣  Objective Type Question or MCQ of Transmission and Distribution page-10‣  Objective Type Question or MCQ of Transmission and Distribution page-9‣  Objective Type Question or MCQ of Transmission and Distribution page-8‣  Objective Type Question or MCQ of Transmission and Distribution page-7‣  Objective Type Question or MCQ of Transmission and Distribution page-6‣  Objective Type Question or MCQ of Transmission and Distribution page-5‣  Objective Type Question or MCQ of Transmission and Distribution page-4‣  Objective Type Question or MCQ of Transmission and Distribution page-3‣  Objective Type Question or MCQ of Transmission and Distribution page-2‣  Objective Type Question or MCQ of Transmission and Distribution 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

Objective Type Question or MCQ of Transmission and Distribution page-12

111. The characteristic impedance of a lossless cable is typically

a) 40 to 60 Ω
b) 100 to 120 Ω
c) 400 to 600 Ω
d) 1000 to 1500 Ω

Ans: (a)

112. Compared to the normal impedance, the fault impedance of a circuit is

a) Lower
b) Higher
c) The same
d) May be lower or higher

Ans: (a)

113. Visual corona takes place in parallel wires at a voltage

a) Higher than disruptive critical voltage
b) Higher than Curie voltage
c) Equal to disruptive voltage
d) None of these

Ans: (a)

114.Corona loss is maximum when using

a) ACSR
b) Unstranded wire
c) Stranded wire
d) Transposed wire

Ans: (b)

115. Corona always cause

a) System faults
b) Radio interference
c) Insulation failure
d) None of these

Ans: (b)

116. If fault occurs near an impedance relay, the V I ratio is

a) Constant for all the locations of fault
b) Lower than the value if fault occurs away from the relay
c) Higher than the value if fault occurs away from the relay
d) May be lower or higher than the value if fault occurs away from the relay

Ans: (b)

117. The fault MVA is given by

a) (Base MVA)/(P.U.Xeq)
b) Base MVA × P.U. Xeq
c) (Base MVA)/((P.U.Xeq)2 )
d) None of these

Ans: (a)

Where Xeq is the fault impedance at the point where fault has occurred

118.While calculating the fault current, the reactances of the machines connected to the power system are taken to be

a) Zero
b) Constant
c) Increases with load
d) Decreases with load

Ans: (b)

119. During rains, the direct capacitance of suspension type insulator

a) Increases
b) Decreases
c) Remain unchanged
d) May increase or decrease

Ans: (b)

120. Guy is attached to a transmission line pole to

a) Reduce the sag
b) Hold the telephone lines
c) Strengthen the pole
d) None of these

Ans: (c)

Related topics :

  1. Objective Type Question or MCQ of Transmission and Distribution page-24
  2. Objective Type Question or MCQ of Transmission and Distribution page-23
  3. Objective Type Question or MCQ of Transmission and Distribution page-22
  4. Objective Type Question or MCQ of Transmission and Distribution page-21
  5. Objective Type Question or MCQ of Transmission and Distribution page-20
  6. Objective Type Question or MCQ of Transmission and Distribution page-19
  7. Objective Type Question or MCQ of Transmission and Distribution page-18
  8. Objective Type Question or MCQ of Transmission and Distribution page-17
  9. Objective Type Question or MCQ of Transmission and Distribution page-16
  10. Objective Type Question or MCQ of Transmission and Distribution page-15
  11. Objective Type Question or MCQ of Transmission and Distribution page-14
  12. Objective Type Question or MCQ of Transmission and Distribution page-13
  13. Objective Type Question or MCQ of Transmission and Distribution page-12
  14. Objective Type Question or MCQ of Transmission and Distribution page-11
  15. Objective Type Question or MCQ of Transmission and Distribution page-10
  16. Objective Type Question or MCQ of Transmission and Distribution page-9
  17. Objective Type Question or MCQ of Transmission and Distribution page-8
  18. Objective Type Question or MCQ of Transmission and Distribution page-7
  19. Objective Type Question or MCQ of Transmission and Distribution page-6
  20. Objective Type Question or MCQ of Transmission and Distribution page-5
  21. Objective Type Question or MCQ of Transmission and Distribution page-4
  22. Objective Type Question or MCQ of Transmission and Distribution page-3
  23. Objective Type Question or MCQ of Transmission and Distribution page-2
  24. Objective Type Question or MCQ of Transmission and Distribution page-1


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