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Analog Electronics

Analog Electronics
The current gain of a BJT is

gm r0
gm /rπ
gm / r0
gm rπ

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Analog Electronics
If the collector resistor is open, the collector voltage is

 unchanged.
 unknown.
  low.
 high.

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Analog Electronics
In a bipolar junction transistor the base region is made very thin so that

  base can be easily fabricated.
  electric field gradient in base is high.
  recombination in base region is minimum.
  base can be easily biased.

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Analog Electronics
The most commonly used semiconductor is

 Germanium
 Carbon
 Silicon
 Sulphur

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Analog Electronics
The input impedance of the base of an emitter follower is usually

 open.
 shorted to ground.
 low.
  high.

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Analog Electronics
A transistor series voltage regulator is called emitter follower regulator because the emitter of the pass transistor follows the ________________________ voltage.

  collector.
  output.
  input.
  base.

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MORE MCQ ON Analog Electronics

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