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Power Electronics

Power Electronics
A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is

  0.27.
  0.32.
  0.67.
  0.45.

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Power Electronics
The latching current of GTO should be of order

 100 mA.
 2 A.
 1 A.
  500 mA.

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

 MOSFETs.
  Thyristor.
 TRIACs.
 Semi conductor diodes.

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Power Electronics
Which of the following is not a characteristic of UJT?

Intrinsic stand off ratio
Negative resistance
Bilateral conduction
Peak-point voltage

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Power Electronics
COOLMOS device can be used in application up to power range of

  2 KVA.
 1 KVA.
 500 VA.
 100 KVA.

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Power Electronics
A triac is equivalent to two SCRs ___________.

In parallel
None of these
In series
In inverse-parallel

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