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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

  200 A.
 20 A.
 400 A.
 600 A.

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Power Electronics
A diac is ___________ switch

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

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Power Electronics
The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt?

 600 V/µs.
 1000 V/µs.
  800 V/µs.
 1200 V/µs.

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Power Electronics
What may happen high dV / dt?

 Anyone of these.
 Unwanted turn ON.
 Breakdown of J2 junction.
  Both A and B.

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Power Electronics
SITH is also known as

 Silicon controlled rectifier.
  Filled controlled diode.
 Filled controlled rectifier.
 None of these.

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

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

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