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Power Electronics

Power Electronics
The device that exhibits negative resistance region is ___________.

Transistor
Triac
UJT
Diac

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Power Electronics
A diac has ___________ pn junctions

Four
None of these
Three
Two

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Power Electronics
When the temperature increases, the intrinsic stand off ratio ___________.

Essentially remains the same
Increases
Decreases
None of these

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Power Electronics
Thyristor is nothing but a

 Amplifier with higher gain.
  Controlled switch.
 Amplifier with large current gain.
 Controlled transistor.

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Power Electronics
In a P1N1P2N2 thyristor which layer is less doped ?

 P2.
  N1.
 P1.
 N2.

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Power Electronics
A diac is turned on by ___________.

Gate voltage
Gate current
A breakover voltage
None of these

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