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Power Electronics

Power Electronics
IGBT combines the advantages of

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

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Power Electronics
A UJT has ___________.

None of these
Two pn junctions
Three pn junctions
One pn junction

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Power Electronics
Latching current for an SCR inserted between a dc voltage source of 200 V and load is 100 mA. Compute the minimum rate of width pulse required to turn ON the SCR in case load consists of R = 20 Ω in series with L = 0.2 H.

  100 µs.
 150 µs.
 200 µs.
 300 µs.

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

  2 KVA.
 1 KVA.
 500 VA.
 100 KVA.

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Power Electronics
A diac has ___________ semiconductor layers

Four
Three
Two
None of these

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Power Electronics
Anode current in an SCR consists of

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

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