Analog Electronics
Pinch-off voltage in a JFET is

 the gate to source voltage that gives unity drain current.
 the gate to source voltage that gives zero drain current.
 the drain voltage that gives infinite drain current.
 the drain voltage that gives zero drain current.

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Analog Electronics
Conventional biasing of a BJT has

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

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