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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

  37.14.
 60.
 3.714.
 65.

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Power Electronics
When the temperature increases, the intrinsic stand off ratio ___________.

Decreases
Increases
Essentially remains the same
None of these

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Power Electronics
Compared to transistor, ______________ have lower on state conduction losses and higher power handling capability

 TRIACs.
 Semi conductor diodes.
  Thyristor.
 MOSFETs.

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Power Electronics
IGBT combines the advantages of

 None of these.
 SITs and MOSFETs.
  BJTs and MOSFETs.
 BJTs and SITs.

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Power Electronics
The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant

Transistor
SCR
None of these
UJT

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Power Electronics
Anode current in an SCR consists of

  electrons only.
  Both electron and holes.
  holes only.
  either electron or holes.

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