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Analog Electronics

Analog Electronics
Semiconductor Diode is used as

 an amplifier
 a rectifier
 a modulator
 an oscillator

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Analog Electronics
A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A.Its output resistance & load regulation ,respectively are

25 Ω & 16.7 %
5 Ω & 16.7 %
25 Ω & 20 %
5 Ω & 20 %

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

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Analog Electronics
The transition capacitance of a reverse biased pn junction having uniform doping on both sides, varies with junction voltage ( VB ) as

  ( VB )- 1 / 2.
  1 / VB.
  ( VB )2.
  VB.

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Analog Electronics
The power dissipated by a transistor approximately equals the collector current times

  collector - emitter voltage.
 0.7 V.
 base supply voltage.
 base - emitter voltage.

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Analog Electronics
Generally, the gain of a transistor amplifier falls at high frequencies due to the

Skin effect
Coupling capacitor at the output
Internal Capacitance of the device
Coupling capacitor at the input

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MORE MCQ ON Analog Electronics

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