Transformer Insulation and Vacuum Technology Quiz
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Questions and Answers

What is the discharge inception stress in the dielectric at a pressure of 1200mm Hg?

  • 0.52 kV peak
  • 0.68 kV peak
  • 0.81 kV peak
  • 1.03 kV peak (correct)
  • At what pressure does the discharge inception stress in the dielectric reach 1.13 kV peak?

  • 1150 mm Hg (correct)
  • 1100 mm Hg
  • 1050 mm Hg
  • 1200 mm Hg
  • What is the energy loss per cycle in the sample at a pressure of 800mm Hg and 16kV peak applied voltage?

  • $128 \, \mu J$
  • $200 \, \mu J$
  • $175 \, \mu J$
  • $150 \, \mu J$ (correct)
  • How many discharges per cycle would occur at a voltage of 16kV peak and a pressure of 800mm Hg?

    <p>14</p> Signup and view all the answers

    What is the apparent discharge magnitude when a step voltage of 1V from the generator causes the same detector response as observed for the 20kV on the capacitor?

    <p>$10^7$ pF</p> Signup and view all the answers

    If each of the four component capacitors was tested individually at 5kV, how much step voltage was required for equal amplitude display?

    <p>$0.62$ V</p> Signup and view all the answers

    What is the diameter of the cylindrical air-filled cavity located in the center of the dielectric?

    <p>$2$ mm</p> Signup and view all the answers

    How deep is the cylindrical air-filled cavity with its axis at right angles to the electrodes?

    <p>$0.05$ mm</p> Signup and view all the answers

    What type of voltage is applied between the electrodes?

    <p><strong>Alternating</strong> voltage</p> Signup and view all the answers

    What configuration are the four identical capacitors connected in to form the 25kV capacitor?

    <p><strong>Series</strong> configuration</p> Signup and view all the answers

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