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Power Electronics

Power Electronics
If holding current of a thyristor is 2 mA then latching current should be

 0.01 A.
  0.004 A.
 0.002 A.
 0.009 A.

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Power Electronics
The device that does not have the gate terminal is ___________.

Diac
FET
Triac
SCR

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

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

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Power Electronics
After proper turn on of thyristor

 gate signal is always present.
 gate signal should present but can be removed.
None of these
  gate signal must be removed.

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Power Electronics
A power semiconductor may undergo damage due to

  High di/dt.
 Low dv/dt.
 Low di/dt.
 High dv/dt.

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Power Electronics
Which statement is true for latching current ?

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

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