Analog Electronics
Which of the following statements is false?

A push pull output transformer has a centre-tapped primary
Class AB operation cannot be used for a push pull audio power output phase
Push pull signals are equal and opposite in phase
All of these

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Analog Electronics
In a transistor amplifier, the reverse saturation electric current ICO

  double for every 10° rise in temperature.
  double for every 1° rise in temperature.
  increase linearly with the temperature.
  double for every 5° rise in temperature.

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