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Analog Electronics

Analog Electronics
The majority carriers in the emitter of a PNP transistor are

 holes.
 free electrons.
 trivalent atoms.
 pentavalent atoms.

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Analog Electronics
The biasing circuit that gives best stability to Q point is

  emitter resistor biasing.
  feedback resistor biasing .
  potential divider biasing.
  base resistance biasing.

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

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Analog Electronics
Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250, are cascaded. The open circuit voltage gain of combined amplifier is

102dB
49dB
51dB
98dB

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Analog Electronics
One of the following is the primary function of an oscillator

None of these
 generates non sinusoidal waveforms
 generates sustained oscillations at a constant amplitude and specific frequency
 produces sinusoidal oscillations

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Analog Electronics
The early effect in a bipolar junction transistor is caused by

Large emitter-base forward bias
Large collector-base reverse bias
Fast turn-on
Fast turn-off

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