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Power Electronics

Power Electronics
The normal way to turn on a diac is by ___________.

Breakover voltage
None of these
Gate current
Gate voltage

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

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

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Power Electronics
If the anode current is 800 A, then the amount of current required to turn off the GTO is about

 20 A.
 400 A.
  200 A.
 600 A.

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Power Electronics
Under normal operating condition voltage clamping device offers impedance of

 low value.
 zero value.
  high value.
 moderate value.

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Power Electronics
A power MOSFET has three terminals called

 Collector, emitter and base.
  Drain, source and gate.
 Drain, source and base.
 Collector, emitter and gate.

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

 Voltage clamping device.
 Snubber circuit.
  Inductor.
 Fuse.

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