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Power Electronics

Power Electronics
The latching current of GTO should be of order

  500 mA.
 2 A.
 1 A.
 100 mA.

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Power Electronics
Which semiconductor device acts like a diode and two transistor?

 Diac.
 SCR.
 UJT.
  Triac.

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

 MOSFETs.
 TRIACs.
 Semi conductor diodes.
  Thyristor.

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Power Electronics
Maximum power loss occurs during

 all.
 delay time.
 spread time.
  rise time.

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Power Electronics
What is used to protect a thyristor from high di / dt conditions?

 Voltage clamping device.
 Snubber circuit.
 Fuse.
  Inductor.

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Power Electronics
The function of snubber circuit connected across the SCR is to

 increase dV / dt.
 decrease di / dt.
  suppress dV / dt.
 decrease dV / dt.

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