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Power Electronics

Power Electronics
COOLMOS device can be used in application up to power range of

  2 KVA.
 1 KVA.
 100 KVA.
 500 VA.

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Power Electronics
A diac is ___________ switch

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

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Power Electronics
Which semiconductor device acts like a diode and two transistor?

 UJT.
 Diac.
 SCR.
  Triac.

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Power Electronics
BCT is used for

 Low power current control.
 High power current control.
 Low power phase control.
  High power phase control.

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Power Electronics
During reverse recovery time

 charge carrier of junction J1 is swept out.
 charge carrier of junction J2 recombined.
  both B and C.
 charge carrier of junction J3 is swept out.

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Power Electronics
What may happen high dV / dt?

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

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