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Power Electronics

Power Electronics
The typical value of SCR for modern alternator is

 0.5.
 1.2.
 1.5.
 1.0.

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Power Electronics
4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is

 0.75.
 0.2.
  0.25.
 0.7.

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

 Microwave transistor.
 BJT.
 Schottky diode.
  Power MOSFET.

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Power Electronics
A diac is ___________ switch

A mechanical
An c.
A d.c.
None of these

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Power Electronics
By which one of the following we can measure the reliability of a string?

 Reliability factor.
  Derating factor.
 Factor of safety.
 String efficient.

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Power Electronics
A triac is equivalent to two SCRs ___________.

None of these
In parallel
In series
In inverse-parallel

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