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Analog Electronics

Analog Electronics
For Germanium pn junction, the maximum value of barrier potential is

 0.7V
 1.5V
 0.3V
 1.6V

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Analog Electronics
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is

5KΩ
1/5KΩ
11KΩ
1/11KΩ

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Analog Electronics
At the unity-gain frequency, the open-loop voltage gain is

  1.
  very large
  zero.
  AV(mid).

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Analog Electronics
LC oscillators are used for produce a waveform with frequency ranging from

 1MHz to 500 MHz
 100 KHz to 500 MHz
 1MHz to 100 GHz
 1 KHz to 1 MHz

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Analog Electronics
Feedback circuit in an oscillator can be accomplished by

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

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Analog Electronics
If the base current is 100 mA and the current gain is 30, the emitter current is

 10 A.
 3 A.
  3.1 A.
 3.33 mA.

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