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Power Electronics

Power Electronics
A triac is equivalent to two SCRs ___________.

In parallel
In inverse-parallel
None of these
In series

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Power Electronics
In a UJT, the p-type emitter is ___________ doped

Moderately
Heavily
Lightly
None of these

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Power Electronics
The latching current of GTO should be of order

 100 mA.
 1 A.
  500 mA.
 2 A.

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Power Electronics
By which one of the following we can measure the reliability of a string?

 Factor of safety.
 Reliability factor.
  Derating factor.
 String efficient.

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Power Electronics
Which statement is true for latching current ?

 It is related to conduction process of device.
 Both C and D.
 It is related to turn off process of the device.
  It is related to turn on process of the device.

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Power Electronics
When the temperature increases, the inter-base resistance (RBB) of a UJT ___________.

Decreases
None of these
Remains the same
Increases

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