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Power Electronics

Power Electronics
The latching current of GTO should be of order

 2 A.
 100 mA.
 1 A.
  500 mA.

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Power Electronics
A single phase full bridge inverter can operated in load commutation mode in case load consist of

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

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Power Electronics
To meet high current demand we use SCRs in

  parallel connection.
 series connection.
 both B and C.
 anti parallel connection.

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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?

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

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

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

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Power Electronics
In a UJT, the p-type emitter is ___________ doped

None of these
Moderately
Heavily
Lightly

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