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Power Electronics

Power Electronics
The typical value of SCR for modern alternator is

 0.5.
 1.0.
 1.2.
 1.5.

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Power Electronics
Which of following is not a power transistor?

 SITS.
 IGBTs.
  TRIAC.
 COOLMOS.

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Power Electronics
A string of n parallel SCRs is operated at 72 KA, the rating of each SCR is 1 KA. If derating factor of the string is 0.1. Then calculate the value of n

 60.
  80.
 90.
 70.

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Power Electronics
A power MOSFET has three terminals called

 Drain, source and base.
  Drain, source and gate.
 Collector, emitter and gate.
 Collector, emitter and base.

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Power Electronics
A triac is a ___________ switch

None of these
Unidirectional
Mechanical
Bidirectional

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Power Electronics
Which triggering is the most reliable?

  dV / dt triggering.
  Forward voltage triggering.
  Thermal triggering.
  Gate triggering.

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