Analog Electronics
When a reverse bias is applied to gate of JFET the depletion region width

  is wider near the source and tapers near the drain.
None of these
  is wider near the drain and tapers near source.
  is uniform in the channel.

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Analog Electronics
In all base driver amplifiers

ac collector voltage is in phase with ac base voltage
ac emitter voltage is 180° out of phase with ac base voltage
None of these
ac collector voltage is 180° out of phase with ac base voltage

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