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Power Electronics

Power Electronics
A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is

  0.45.
  0.27.
  0.67.
  0.32.

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Power Electronics
The latching current of GTO should be of order

  500 mA.
 1 A.
 2 A.
 100 mA.

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Power Electronics
Which triggering is the most reliable?

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

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Power Electronics
Power transistor are type of

  All of above.
 BJTs.
 MOSFETs.
 IGBTs.

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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

 3.714.
  37.14.
 60.
 65.

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Power Electronics
Which of following devices has highest di/dt and dv/dt capability?

 SCR.
 SITH.
 SIT.
  GTO.

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