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Power Electronics

Power Electronics
When the temperature increases, the inter-base resistance (RBB) of a UJT ___________.

None of these
Remains the same
Increases
Decreases

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Power Electronics
A diac has ___________ pn junctions

Four
None of these
Three
Two

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Power Electronics
Anode current in an SCR consists of

  either electron or holes.
  electrons only.
  Both electron and holes.
  holes only.

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Power Electronics
Gate circuit or triggering circuit of a thyristor is

 high power circuit.
  lower power circuit.
 magnetic circuit.
 may be low power or high power circuit.

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Power Electronics
Leakage current flows through the thyristor in

 forward blocking mode.
  both forward and reverse blocking mode.
 forward conduction mode.
 reverse blocking mode.

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Power Electronics
What may happen high dV / dt?

 Unwanted turn ON.
  Both A and B.
 Anyone of these.
 Breakdown of J2 junction.

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