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Power Electronics

Power Electronics
The device that does not have the gate terminal is ___________.

FET
SCR
Diac
Triac

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Power Electronics
A single phase full bridge inverter can operate in load commutation mode in case load consists of

  RLC underdamped.
 RLC overdamped.
 RLC critically damped.
 RL.

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Power Electronics
Which of the following is disadvantage of fast recovery diodes?

 Recovery is only 50 µs.
  Doping is carried out.
 None of these.
 Recovery is only 5 µs.

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Power Electronics
Practical way of obtaining static voltage equalization in series connected SCRs is by the use of

 one resistor in series with each SCR.
  resistors of the same value across each SCR.
 resistors of different values across each SCR.
 one resistor across the string.

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Power Electronics
Example of a voltage clamping device

 fast acting fuse.
 aluminium block.
  metal oxide varistor.
 snubber circuit.

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Power Electronics
A diac is simply ___________.

A three junction device
None of these
A single junction device
A triac without gate terminal

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