Analog Electronics
Depending upon the switching recovery time and on state drop, the power diodes are types

 Fast recovery, Schottky.
 None of these.
 General purpose, fast recovery.
  General purpose, fast recovery and schottly.

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Analog Electronics
The common-source JFET amplifier has

  a high input impedance and a voltage gain less than 1.
  a high input impedance and a very high voltage gain.
  no voltage gain.
  a very high input impedance and a relatively low voltage

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