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Power Electronics

Power Electronics
The typical value of SCR for modern alternator is

 1.0.
 0.5.
 1.5.
 1.2.

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Power Electronics
Why resistor is used in Snubber circuit ?

 To minimize the loss .
  To minimize the discharging current.
 To minimize the charging current.
 All of these.

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Power Electronics
BCT is used for

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

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Power Electronics
Dynamic equalising circuit is useful

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

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Power Electronics
A UJT has ___________.

One pn junction
None of these
Two pn junctions
Three pn junctions

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Power Electronics
Snubber circuit is used with SCR

 anti parallel.
 in series.
 either series or parallel.
  in parallel.

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