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Power Electronics

Power Electronics
A diac has ___________ terminals.

Two
Three
None of these
Four

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Power Electronics
Which of following is normally ON device

 IGBT.
 BJT.
  SIT.
 TRIAC.

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Power Electronics
ON state voltage drop across SCR lie between the range

 1.5 - 2 V.
 0.5 - 1 V.
 0 - 0.5 V.
  1 - 1.5 V.

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Power Electronics
SITH is also known as

 Silicon controlled rectifier.
 None of these.
 Filled controlled rectifier.
  Filled controlled diode.

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Power Electronics
Thermal voltage VT can be given by

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

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Power Electronics
Switching frequency of SITH is

  100 KHz.
 60 KHz.
 10 KHz.
 5 KHz.

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