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Analog Electronics

Analog Electronics
What is the range of energy band gap of semiconductors ?

 0 ev
 10-15 ev
 1-3 ev
 14-15 ev

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Analog Electronics
Secondary breakdown occures in

 Both BJT and MOSFET.
 MOSFET but not in BJT.
  BJT but not is MOSFET.
 None of these.

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Analog Electronics
If the current gain is unknown in an emitter-biased circuit, you cannot calculate the

 emitter voltage.
 collector current.
  base current.
 emitter current.

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Analog Electronics
The leakage electric current ICBO flows in

  the emitter, base and collector leads.
  the emitter and base leads.
  the emitter and collector leads.
  the base and collector leads.

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Analog Electronics
The β of a transistor is the ratio of the

 base current to collector current.
  collect current to base current.
 emitter current to collector current.
 collect current to emitter current.

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Analog Electronics
The base of an npn transistor is thin and

  lightly doped.
 heavily doped.
 metallic.
 doped by a pentavalent material.

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