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Power Electronics

Power Electronics
The latching current of GTO should be of order

 2 A.
 1 A.
  500 mA.
 100 mA.

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Power Electronics
Which semiconductor device acts like a diode and two transistor?

 Diac.
  Triac.
 SCR.
 UJT.

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Power Electronics
Power electronics essentially deals with control of a.c. power at ___________.

Frequencies above 1000 kHz
Frequencies less than 10 Hz
50 Hz frequency
Frequencies above 20 kHz

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Power Electronics
In a P1N1P2N2 thyristor which layer is less doped ?

 P1.
  N1.
 P2.
 N2.

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Power Electronics
ON state voltage drop across SCR lie between the range

 0 - 0.5 V.
  1 - 1.5 V.
 1.5 - 2 V.
 0.5 - 1 V.

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Power Electronics
During reverse recovery time

 charge carrier of junction J2 recombined.
 charge carrier of junction J3 is swept out.
  both B and C.
 charge carrier of junction J1 is swept out.

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