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Power Electronics

Power Electronics
The typical value of SCR for modern alternator is

 0.5.
 1.2.
 1.0.
 1.5.

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Power Electronics
Why resistor is used in Snubber circuit ?

 To minimize the charging current.
  To minimize the discharging current.
 To minimize the loss .
 All of these.

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Power Electronics
Power electronics essentially deals with control of a.c. power at ___________.

Frequencies less than 10 Hz
Frequencies above 1000 kHz
Frequencies above 20 kHz
50 Hz frequency

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Power Electronics
A single phase full bridge inverter can operated in load commutation mode in case load consist of

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

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Power Electronics
A modern power semiconductor device that combines the characteristic of BJT and MOSFET is

  IGBT.
 MCT.
 GTO.
 FCT.

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

Breakover voltage
None of these
Gate voltage
Gate current

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