Analog Electronics
The Q-point in a voltage amplifier is selected in the middle of the active region because

  the circuit needs a small.
  it gives distortions less output.
  the biasing circuit then need less number of resistors.
  it gives better stability.

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Analog Electronics
Conventional biasing of a BJT has

  EB reversed biased and CB reversed biased.
  EB reversed biased and CB forward biased.
  EB forward biased and CB forward biased.
  EB forward biased and CB reversed biased.

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