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Analog Electronics

Analog Electronics
The resistance of pn junction when it is forward biased in the order of

 Ohm
 Kilo Ohm
None of these
 Mega Ohm

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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
1/11KΩ
11KΩ
1/5KΩ

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Analog Electronics
Early effect in BJT refers to

  thermal breakdown.
  base narrowing.
  zener breakdown.
  avalanche breakdown.

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Analog Electronics
The diffusion capacitance of a forward biased P+N junction diode with a steady electric current I depends on

  mean life time of the holes.
  junction area.
  mean life time of the electrons.
  width of the depleted region.

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Analog Electronics
Semiconductor Diode is used as

 an amplifier
 an oscillator
 a modulator
 a rectifier

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Analog Electronics
What will be the Potential barrier for Si Diode ?

 0.3 V
 0.7 V
 0.07 V
 0.05 V

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