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Power Electronics

Power Electronics
IGBT combines the advantages of

 SITs and MOSFETs.
 BJTs and SITs.
  BJTs and MOSFETs.
 None of these.

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Power Electronics
Which of the following is used in SCR to protect from high dV / dt?

 Equalizing circuit.
  Snubber circuit.
 Circuit breaker.
 Fuse.

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

Decreases
Increases
Remains the same
None of these

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Power Electronics
Which of following is normally ON device

 IGBT.
 TRIAC.
  SIT.
 BJT.

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Power Electronics
Which statement is true for latching current ?

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

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Power Electronics
A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is

 30° to 180°.
 60° to 120°.
 30° to 150°.
 60° to 180°.

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