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Power Electronics

Power Electronics
Thyristor can be protected from over voltages by using

 fuse.
 heat sink.
  voltage clamping device.
 snubber circuit.

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Power Electronics
Which following is a two terminal three layer device?

 None of above.
 BJT.
 MOSFET.
  Power dioed.

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Power Electronics
Under normal operating condition voltage clamping device offers impedance of

 low value.
  high value.
 zero value.
 moderate value.

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Power Electronics
A triac has ___________ semiconductor layers.

Five
Two
Three
Four

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Power Electronics
Maximum power loss occurs during

 spread time.
 delay time.
  rise time.
 all.

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Power Electronics
Which of the following is used in heat sink?

 Silver.
 Carbon.
  Aluminium.
 Iron.

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