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Power Electronics

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

 3.714.
 60.
 65.
  37.14.

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Power Electronics
Which statement is true for latching current ?

 Both C and D.
 It is related to conduction process of device.
 It is related to turn off process of the device.
  It is related to turn on process of the device.

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Power Electronics
Which triggering is the most reliable?

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

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Power Electronics
A diac is turned on by ___________.

None of these
A breakover voltage
Gate voltage
Gate current

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Power Electronics
The latching current of GTO should be of order

  500 mA.
 2 A.
 1 A.
 100 mA.

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Power Electronics
Light triggering mainly used in

 medium voltage direct current transmission.
 low - voltage direct current transmission.
  high voltage direct current transmission.
  all of these.

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