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Power Electronics

Power Electronics
A triac is a ___________ switch

Bidirectional
Mechanical
Unidirectional
None of these

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Power Electronics
Which of the following is used in SCR to protect from high dV / dt?

 Fuse.
 Equalizing circuit.
 Circuit breaker.
  Snubber circuit.

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Power Electronics
Spread time is defined as the interval during which

 both (A) and (B).
 anode current rises from 10 % to 90 % of its final value.
 anode voltage drops from 10 % of its initial value to zero.
  anode current rises from 90 % to its final value.

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Power Electronics
The device that does not have the gate terminal is ___________.

Diac
FET
SCR
Triac

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Power Electronics
A UJT has ___________.

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

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Power Electronics
Which one is most suitable power device for high frequency (>100 KHz) switching application?

  Power MOSFET.
 Schottky diode.
 Microwave transistor.
 BJT.

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