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

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

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Analog Electronics
Voltage Series (feedback also called series-shunt feedback) results in

Increase in input impedance & decreases in output impedance
Increase in both input & output impedances
Decreases in both input & output impedances
Decrease in input impedance & increase in output impedance

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