Analog Electronics
The positive part of the output signal in a transistor circuit starts clipping, if Q point of the circuit moves

  toward the cutoff point.
  none of these.
  toward the saturation point.
  toward the center of the load line.

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Analog Electronics
In all base driver amplifiers

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

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