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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

 65.
 3.714.
 60.
  37.14.

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Power Electronics
Light triggering mainly used in

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

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Power Electronics
Materials used in heat sink should have

 large surface area.
 high melting point.
  All of these.
 high thermal conductivity.

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Power Electronics
When the temperature increases, the inter-base resistance (RBB) of a UJT ___________.

Decreases
None of these
Remains the same
Increases

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Power Electronics
Which following is a two terminal three layer device?

  Power dioed.
 MOSFET.
 None of above.
 BJT.

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Power Electronics
Power transistor are type of

 IGBTs.
  All of above.
 BJTs.
 MOSFETs.

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