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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

 600 A.
 20 A.
  200 A.
 400 A.

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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

 130 μs.
  135 μs.
 145 μs.
 140 μs.

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Power Electronics
A single phase full bridge inverter can operate in load commutation mode in case load consists of

  RLC underdamped.
 RLC critically damped.
 RL.
 RLC overdamped.

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

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

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Power Electronics
The UJT may be used as ___________.

A sawtooth generator
None of these
A rectifier
Am amplifier

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Power Electronics
What happen due to high di / dt?

 Insulation failure.
 None of these.
 Breakdown of junction.
  Local hot spot.

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