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Analog Electronics

Analog Electronics
When a junction diode is Forward Biased the thickness of the depletion region is................

 Smaller
  Not determine
 Medium
 Larger

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Analog Electronics
MOSFET requires

 A large input current.
  Only small input current.
 None of these.
 A large input current and high voltage.

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Analog Electronics
Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250, are cascaded. The open circuit voltage gain of combined amplifier is

49dB
102dB
98dB
51dB

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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

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

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Analog Electronics
The DC electric current gain in common collector configuration is given by

  β.
  α - 1.
  α.
  β + 1.

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Analog Electronics
Feedback circuit in an oscillator can be accomplished by

 Resistive coupling between input and output
 Inductive coupling between input and output
 Capacitive coupling between input and output
 Any one or combinations of the above methods

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