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Power Electronics

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

 40 mA.
 23 mA.
  10 mA.
 60 mA.

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Power Electronics
Which triggering is the most reliable?

  dV / dt triggering.
  Gate triggering.
  Forward voltage triggering.
  Thermal triggering.

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Power Electronics
BCT is used for

 High power current control.
 Low power current control.
  High power phase control.
 Low power phase control.

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Power Electronics
A thyristor will be triggered when Vg = 1.5 volt and Ig = 100 mA in the given figure. Calculate the value of R in ohm is

  37.14.
 65.
 60.
 3.714.

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Power Electronics
Which of following is not a power transistor?

 SITS.
 COOLMOS.
 IGBTs.
  TRIAC.

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Power Electronics
Thyristor can be protected from over voltages by using

 snubber circuit.
 fuse.
  voltage clamping device.
 heat sink.

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MORE MCQ ON Power Electronics

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