Skin Effect and Proximity Effect MCQ

Test your knowledge with important Skin Effect and Proximity Effect MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Skin Effect and Proximity Effect MCQs at Bissoy

• _______ polarity is preferred on OH lines due to less radio interference.
  ক

  Negative

  খ

  Positive

  গ

  Ground

  ঘ

  Any of the mentioned
• There is no requirement of reactive power at the converter station of a HVDC link.
  ক

  True

  খ

  False
• Stunt capacitors are installed on ____ and smoothing reactor is installed in ____ in TL.
  ক

  AC side, DC side

  খ

  DC side, DC side

  গ

  AC side, AC side

  ঘ

  DC side, AC side
• A two conductor DC line is more reliable than a three conductor AC line.
  ক

  True

  খ

  False
• What is the major problem in current interruption in DC circuit?
  ক

  No natural zero current

  খ

  Extra energy stored in circuit

  গ

  High flashover

  ঘ

  All of the mentioned
• Most industrially accepted insulators used in HVDC is/are ___________
  ক

  high resistance toughened glass type

  খ

  porcelein type

  গ

  silicon rubber composite type

  ঘ

  all of the mentioned
• What makes porcelein type insulator to be off market?
  ক

  Weight

  খ

  Greater failure rate

  গ

  Self clearing

  ঘ

  Weight and greater failure rate
• The factors which contribute more to the addition of insulator in HDVC line are ____________
  ক

  high unit flashover

  খ

  contamination

  গ

  thermal runaway

  ঘ

  high unit flashover, contamination and thermal runaway
• More number of insulators are needed in AC line as compared to DC line
  ক

  True

  খ

  False
• Which of below factor(s) contribute to the more receptibility to pollution of insulators?
  ক

  Ionic current

  খ

  Uniform voltage

  গ

  Electrostatic voltage

  ঘ

  Ionic current and Electrostatic voltage
• Insulator capacitance is does not play significant role in HVDC lines
  ক

  True

  খ

  False
• The overvoltage that occur mainly under converter stations are due to _________ (i) Lightening and switching overvoltage (ii) Transients produced in conductors (iii) Overvoltage due to fault clearing Choose the correct option.
  ক

  (i), (ii), (iii)

  খ

  (ii), (iii)

  গ

  (iii)

  ঘ

  (i), (ii)
• Which of the DC links can be operated when a fault occurs in the transmission line?
  ক

  Bipolar link and Homopolar link

  খ

  Monopolar link and Bipolar link

  গ

  Monopolar link

  ঘ

  Bipolar link
• Homopolar link is employed instead of bipolar link to ___________
  ক

  reduce corona loss

  খ

  reduce radio interference

  গ

  improve reliability

  ঘ

  all of the mentioned
• If the currents in the two conductors of bipolar HDVC link is same, then _______
  ক

  ground current is zero

  খ

  two poles work independently

  গ

  ground current zero and two poles work independently

  ঘ

  none of the mentioned
• (i) Bipolar link has two conductors (ii) Both conductors have same magnitude of voltage.
  ক

  (i) is False & (ii) is True

  খ

  (i) is True & (ii) is True

  গ

  Both are false

  ঘ

  (i) is True & (ii) is False
• (i) Monopolar DC link has one energised conductor of positive polarity. (ii) It was ground as return path Opt the most appropriate.
  ক

  (i) is False & (ii) is True

  খ

  (i) is True & (ii) is True

  গ

  Both are false

  ঘ

  (i) is True & (ii) is False
• Which of the above is not a DC link?
  ক

  Monopolar link

  খ

  Bipolar link

  গ

  Homopolar link

  ঘ

  None of the mentioned
• Smooth reactor is connected between _____________
  ক

  DC output of converter and load

  খ

  load and ground

  গ

  source and input of converter

  ঘ

  any of the mentioned
• Ripple of the DC-output at power converter is ____________
  ক

  maximum value of instantaneous difference between average and instantaneous value

  খ

  minimum value of instantaneous difference between average and instantaneous value

  গ

  average value of output

  ঘ

  maximum value of instantaneous value