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Power Electronics

Power Electronics
A diac is ___________ switch

A d.c.
None of these
An c.
A mechanical

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Power Electronics
Snubber circuit is used with SCR

 anti parallel.
 either series or parallel.
  in parallel.
 in series.

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Power Electronics
The typical time of rising time lies between

 90 - 100 µs.
  1 - 4 µs.
 10 - 20 µs.
 40 - 60 µs.

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Power Electronics
Anode current in an SCR consists of

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

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Power Electronics
The normal way to turn on a diac is by ___________.

Breakover voltage
None of these
Gate voltage
Gate current

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Power Electronics
Dynamic equalising circuit is useful

 for voltage equalisation.
  both B and C.
 to limit dV / dt of SCR.
 to limit di / dt of SCR.

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