Analog Electronics
When the pn junction is forward biased the sequence of events that take place are

  injection, diffusion and recombination.
  diffusion, injection and drift.
  none of above.
  diffusion, drift and recombination.

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

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

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