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Power Electronics

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

 0.2.
 0.7.
 0.75.
  0.25.

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Power Electronics
A UJT is sometimes called ___________ diode.

High resistance
Single-base
Double-base
Low resistance

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

Gate voltage
Breakover voltage
Gate current
None of these

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Power Electronics
If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR?

 3 µs.
 3.1 µs
 3.2 µs
  3.3 µs

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

 Silver.
  Aluminium.
 Iron.
 Carbon.

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Power Electronics
A diac has ___________ pn junctions

Four
Three
Two
None of these

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