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Power Electronics

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

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

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Power Electronics
A diac has ___________ pn junctions

Three
Four
Two
None of these

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Power Electronics
Switching frequency of SITH is

 10 KHz.
 5 KHz.
 60 KHz.
  100 KHz.

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Power Electronics
Dynamic equalising circuit is useful

 for voltage equalisation.
 to limit dV / dt of SCR.
 to limit di / dt of SCR.
  both B and C.

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Power Electronics
A diac is turned on by ___________.

Gate current
None of these
Gate voltage
A breakover voltage

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Power Electronics
When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________.

High
None of these
Low
Extremely low

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