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Power Electronics

Power Electronics
The UJT may be used as ___________.

A sawtooth generator
None of these
A rectifier
Am amplifier

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Power Electronics
A thyristor will be triggered when Vg = 1.5 volt and Ig = 100 mA in the given figure. Calculate the value of R in ohm is

 60.
  37.14.
 3.714.
 65.

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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
Compared to transistor, ______________ have lower on state conduction losses and higher power handling capability

 TRIACs.
 Semi conductor diodes.
 MOSFETs.
  Thyristor.

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Power Electronics
A diac has ___________ terminals.

Four
None of these
Two
Three

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Power Electronics
A triac has ___________ semiconductor layers.

Three
Five
Two
Four

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