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Power Electronics

Power Electronics
4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is

 0.7.
  0.25.
 0.75.
 0.2.

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Power Electronics
Example of a voltage clamping device

  metal oxide varistor.
 snubber circuit.
 fast acting fuse.
 aluminium block.

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Power Electronics
A triac is equivalent to two SCRs ___________.

In parallel
None of these
In series
In inverse-parallel

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Power Electronics
IGBT combines the advantages of

 SITs and MOSFETs.
 None of these.
  BJTs and MOSFETs.
 BJTs and SITs.

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Power Electronics
A diac has ___________ semiconductor layers

Three
None of these
Four
Two

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Power Electronics
A diac is simply ___________.

A single junction device
A three junction device
None of these
A triac without gate terminal

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