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Power Electronics

Power Electronics
The latching current of SCR is 20 mA. Its holding current will be

 40 mA.
  10 mA.
 60 mA.
 23 mA.

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Power Electronics
A power MOSFET has three terminals called

 Drain, source and base.
 Collector, emitter and gate.
 Collector, emitter and base.
  Drain, source and gate.

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Power Electronics
Gate circuit or triggering circuit of a thyristor is

  lower power circuit.
 may be low power or high power circuit.
 high power circuit.
 magnetic circuit.

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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.
 140 μs.
 130 μs.
  135 μs.

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Power Electronics
Snubber circuit is used with SCR

 in series.
 either series or parallel.
 anti parallel.
  in parallel.

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Power Electronics
Which of the following is used in heat sink?

 Carbon.
 Silver.
 Iron.
  Aluminium.

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