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Power Electronics

Power Electronics
Figure shows two thyristors rated 400 A sharing a load current. Current through T2 is 180A. Current through T1 will be

 110 A.
  150 A.
 100 A.
 120 A.

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Power Electronics
SCRs are used in series to meet

 low voltage demand.
 high current demand.
  high voltage demand.
 low current demand.

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Power Electronics
For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance?

 115 ohm
 11.19 ohm
  111.9 ohm
 108 ohm

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Power Electronics
When the temperature increases, the intrinsic stand off ratio ___________.

None of these
Essentially remains the same
Increases
Decreases

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Power Electronics
A diac has ___________ terminals.

Four
Two
None of these
Three

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Power Electronics
Leakage current flows through the thyristor in

 forward blocking mode.
  both forward and reverse blocking mode.
 reverse blocking mode.
 forward conduction mode.

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