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Power Electronics

Power Electronics
The UJT may be used as ___________.

A sawtooth generator
Am amplifier
None of these
A rectifier

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

  0.67.
  0.45.
  0.32.
  0.27.

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

 100 KVA.
 1 KVA.
  2 KVA.
 500 VA.

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Power Electronics
The device that does not have the gate terminal is ___________.

Diac
SCR
FET
Triac

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Power Electronics
Thermal voltage VT can be given by

 KT/q.
  Kq/T.
 (K2/q)(T + 1/T - 1).
 qT/K.

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Power Electronics
What is used to protect the SCR from over current ?

  CB and fuse.
 Heat sink.
 Voltage clamping device.
 Snubber circuit.

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MORE MCQ ON Power Electronics

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