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Analog Electronics

Analog Electronics
The number of orbiting electrons in germanium atom are :

 28
 42
 32
 36

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Analog Electronics
The current gain of a pnp transistor is

 the collector current divided by the emitter current.
 near zero.
 the negative of the npn current gain.
 the ratio of collector current to emitter current.

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Analog Electronics
In a properly biased NPN transistor most of the electrons from the emitter

  are stopped by the junction barrier.
  recombine in the emitter its self.
  recombine with holes in the base .
  pass through the base to the collector.

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Analog Electronics
The transition capacitance of a reverse biased pn junction having uniform doping on both sides, varies with junction voltage ( VB ) as

  1 / VB.
  ( VB )2.
  VB.
  ( VB )- 1 / 2.

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Analog Electronics
The input voltage to an emitter follower is usually

 greater than the generator voltage.
 equal to the generator voltage.
  less than the generator voltage.
 equal to the supply voltage.

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Analog Electronics
Which of the following components are used for bias compensation in transistor circuit?

  Resistors.
  Both (A) and (C) above.
  Thermistor.
  Rectifier diodes.

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