☰ Transmission and Distribution of Electrical Power (Electrical Engineering) - MCQs

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Q25.

The chances of occurrence of corona are maximum during

  • A. humid weather
  • B. dry weather
  • C. winter
  • D. hot summer
    ✍ Discuss    
Q26.

The effect of corona is

  • A. increased energy loss
  • B. increased reactance
  • C. increased inductance
  • D. all of the above
    ✍ Discuss    
Q27.

Corona loss in a transmission line is depend on

  • A. diameter of the conductor
  • B. material of the conductor
  • C. height of the conductor
  • D. all of the above
    ✍ Discuss    
Q28.

Bundle conductors reduce

  • A. surface electric stress of conductor
  • B. increases the line reactance
  • C. decreases the line capacitance
  • D. increase the line capacitance
    ✍ Discuss    
Q29.

Corona loss can be reduced by the use of hollow conductors because

  • A. the current density is reduced
  • B. the eddy current in the conductor is eliminated
  • C. for a given cross section, the radius of the conductor is increased
  • D. of better ventilation in the conductor
    ✍ Discuss    
Q30.

Corona loss increases with

  • A. decrease in conductor size and increase in supply frequency
  • B. increase in both conductor size and supply frequency
  • C. decrease in both conductor size and supply frequency
  • D. increase in conductor size and decrease in supply frequency
    ✍ Discuss    
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