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Power Electronics

Power Electronics
If the anode current is 800 A, then the amount of current required to turn off the GTO is about

 400 A.
 20 A.
  200 A.
 600 A.

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Power Electronics
Light triggering mainly used in

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

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Power Electronics
During which time maximum conduction spreading take place in the thyristor during turn ON?

 Rise time.
 Same for every case.
  Spread time.
 Delay time.

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Power Electronics
For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance?

  111.9 ohm
 115 ohm
 108 ohm
 11.19 ohm

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Power Electronics
The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is

 145 μs.
  135 μs.
 140 μs.
 130 μs.

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Power Electronics
A diac is ___________ switch

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

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