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Power Electronics

Power Electronics
ON state voltage drop across SCR lie between the range

 0.5 - 1 V.
  1 - 1.5 V.
 0 - 0.5 V.
 1.5 - 2 V.

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

  150 A.
 120 A.
 110 A.
 100 A.

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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
 108 ohm
  111.9 ohm

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Power Electronics
A thyristor can termed as

 Square wave switch.
 AC switch.
 Both a and B.
  DC switch.

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Power Electronics
A triac can pass a portion of ___________ half-cycle through the load.

Only positive
None of these
Both positive and negative
Only negative

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Power Electronics
Which of following is not a power transistor?

  TRIAC.
 COOLMOS.
 SITS.
 IGBTs.

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