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

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

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Analog Electronics
The typical input stage of an opamp has a

  differential input and single - ended output.
  differential input and differential output.
  single - ended input and single-ended output.
  single - ended input and differential output.

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