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Power Electronics

Power Electronics
A modern power semiconductor device that combines the characteristic of BJT and MOSFET is

  IGBT.
 GTO.
 MCT.
 FCT.

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Power Electronics
Figure shows two thyristors rated 400 A sharing a load current. Current through T2 is 180A. Current through T1 will be

 120 A.
  150 A.
 110 A.
 100 A.

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Power Electronics
A diac has ___________ pn junctions

Four
None of these
Three
Two

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Power Electronics
The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will

 Turn on if inductance is removed.
  Turn on.
 Turn on if pulse frequency us increased to two times.
 Not turn on.

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Power Electronics
If the anode current is 800 A, then the amount of current required to turn off the GTO is about

  200 A.
 600 A.
 20 A.
 400 A.

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Power Electronics
To meet high current demand we use SCRs in

 series connection.
  parallel connection.
 both B and C.
 anti parallel connection.

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