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Power Electronics

Power Electronics
A power semiconductor may undergo damage due to

 Low di/dt.
 Low dv/dt.
 High dv/dt.
  High di/dt.

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Power Electronics
A power MOSFET has three terminals called

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

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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.
 65.
 60.

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Power Electronics
BCT is used for

 Low power current control.
 Low power phase control.
 High power current control.
  High power phase control.

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Power Electronics
Thermal voltage VT can be given by

  Kq/T.
 (K2/q)(T + 1/T - 1).
 KT/q.
 qT/K.

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Power Electronics
A GTO can be turned on by applying

 Positive source signal.
 Positive drain signal.
 None of these.
  Positive gate signal.

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