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Power Electronics

Power Electronics
A triac is a ___________ switch

Unidirectional
Bidirectional
Mechanical
None of these

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Power Electronics
Typical range of thyristor turn OFF time is

 3 - 50 µs.
 3 - 500 µs.
  3 - 100 µs.
 3 - 10 µs.

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Power Electronics
The normal way to turn on a diac is by ___________.

Gate current
Gate voltage
None of these
Breakover voltage

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Power Electronics
A triac has ___________ semiconductor layers.

Four
Three
Two
Five

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

 1 KVA.
 100 KVA.
 500 VA.
  2 KVA.

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Power Electronics
Light triggering mainly used in

 medium voltage direct current transmission.
  all of these.
 low - voltage direct current transmission.
  high voltage direct current transmission.

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