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

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

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Analog Electronics
Which of the following statements is false?

A push pull output transformer has a centre-tapped primary
All of these
Class AB operation cannot be used for a push pull audio power output phase
Push pull signals are equal and opposite in phase

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Analog Electronics
In an OP-amp differentiator

Polarity of input and output is the same
The amplitude of output is proportional to rate of change of input
Output occurs when input is finite and constant
The amplitude of output is proportional to input

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