Analog Electronics
Colpitts oscillator is also called as

 Resonant circuit oscillator
 LC oscillator
All of these
 Tank circuit oscillator

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Analog Electronics
The common-source JFET amplifier has

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

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