Analog Electronics
Which of the following is expected to have highest input impedance?

  CE bipolar transistor.
  Common collector bipolar transistor
  MOSFET.
  JEFT amplifier.

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

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

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