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Power Electronics

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

FET
SCR
Triac
Diac

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Power Electronics
BCT is used for

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

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Power Electronics
Which triggering is the most reliable?

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

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Power Electronics
A diac is turned on by ___________.

None of these
Gate voltage
A breakover voltage
Gate current

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Power Electronics
What may happen high dV / dt?

  Both A and B.
 Unwanted turn ON.
 Anyone of these.
 Breakdown of J2 junction.

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Power Electronics
For series connected SCR’s dynamic equalising circuit consists of

 series R and diode with C across R.
 series R and diode with C across R.
  R and C in series but with diode across R.
 R and C in series but with diode across C.

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