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Power Electronics

Power Electronics
The typical value of SCR for modern alternator is

 1.5.
 1.0.
 0.5.
 1.2.

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Power Electronics
Power transistor are type of

 BJTs.
  All of above.
 IGBTs.
 MOSFETs.

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Power Electronics
Which following is a two terminal three layer device?

 BJT.
 None of above.
  Power dioed.
 MOSFET.

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

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

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Power Electronics
A diac has ___________ semiconductor layers

Three
None of these
Two
Four

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Power Electronics
Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then

 Vc1 = Vc2 = Vc3 any value of Ig.
 Vc1 > Vc2 > Vc3 when Ig1= Ig2
  Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3.
 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3.

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