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Power Electronics

Power Electronics
The latching current of GTO should be of order

  500 mA.
 2 A.
 1 A.
 100 mA.

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Power Electronics
A triac is equivalent to two SCRs ___________.

In inverse-parallel
None of these
In series
In parallel

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

Only negative
Both positive and negative
None of these
Only positive

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Power Electronics
Anode current in an SCR consists of

  Both electron and holes.
  either electron or holes.
  holes only.
  electrons only.

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Power Electronics
60 thyrsistors are connected in series and parallel to form a 10 KV and 5.5 KA switch. Each thyristor is rated for 1.2 KV, 1 KA. The no. of parallel path are 6. The efficiency of the switch is

 90.9 %.
  76.3 %.
 91.6 %.
 83.3 %.

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

Decreases
None of these
Increases
Essentially remains the same

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