Analog Electronics
Which of these is the best description of a zener diode?

  It is a rectifier diode.
  It is a constant electric current device.
  It works in the forward region.
  It is a constant voltage device.

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Analog Electronics
In an OP-amp differentiator

Output occurs when input is finite and constant
The amplitude of output is proportional to input
Polarity of input and output is the same
The amplitude of output is proportional to rate of change of input

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Analog Electronics
Which of the following statements is false?

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

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