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Analog Electronics

Analog Electronics
The cascade amplifier is a multistage configuration of

CC-CB
CE-CB
CE-CC
CB-CC

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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

1/11KΩ
1/5KΩ
5KΩ
11KΩ

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Analog Electronics
When a reverse bias is applied to a diode, it will

  lower the potential barrier.
  none of these.
  raise the potential barrier.
  increases the majority carrier an electric current greatly.

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Analog Electronics
The input impedance of the base of an emitter follower is usually

  high.
 shorted to ground.
 open.
 low.

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Analog Electronics
For a transistor amplifier with self- biasing network, the following components are used: R1 = 4 KΩ, R2 = 4 KΩ and RE = 1 KΩ, the approximate value of stability factor will be

  2.
  4.
  3.
  1.5.

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Analog Electronics
The expression for frequency of oscillations of a RC phase shift oscillator is

 f = 1 / (2π RC√6)
 f = 1 / (2π√R(C1 + C2))
 f = 1 / (2π√RC)
None of these

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