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Analog Electronics

Analog Electronics
The feedback factor of a Wien bridge oscillator using Op-Amp is

 1/3
 1/2
 1
 1/4

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Analog Electronics
The Q-point in a voltage amplifier is selected in the middle of the active region because

  it gives better stability.
  it gives distortions less output.
  the circuit needs a small.
  the biasing circuit then need less number of resistors.

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Analog Electronics
Reverse saturation electric current in a silicon pn junction diode nearly doubles for very

  2° rise in temperature.
  10° rise in temperature.
  5° rise in temperature.
  6° rise in temperature.

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Analog Electronics
Germanium has

 covalent bond.
 ionic bond.
 molecular bond.
 metallic bond.

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Analog Electronics
The following relationship between α and β are correct except

  1 - α = 1 / (1 + β).
  β = α / (1 - α).
  α = β / (1 - β).
  α = β / (1 + β).

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Analog Electronics
In a properly biased NPN transistor most of the electrons from the emitter

  recombine with holes in the base .
  pass through the base to the collector.
  are stopped by the junction barrier.
  recombine in the emitter its self.

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