Analog Electronics
The horizontal intercept of dc load line is the same as ideal

Operating point
Cut off point
Saturation point
Quasi saturation point

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Analog Electronics
The arrowhead on the transistor symbol points in the direction of

  majority carrier flow in the emitter region.
  conventional electric current flow in the emitter region.
  minority carrier flow in the emitter region.
  electron flow in the emitter region.

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