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

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

5KΩ

1/5KΩ

11KΩ

1/11KΩ

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

zero.

AV(mid).

very large

1.

zero.

AV(mid).

very large

1.

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Analog Electronics
For a diode, reverse recovery time is defined as the time between the instant diode current becomes zero and the instant reverse recovery current decays to

0.

10% of reverse peak current.

25% of reverse peak current.

15% of reverse peak current.

0.

10% of reverse peak current.

25% of reverse peak current.

15% of reverse peak current.

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Analog Electronics
For an NPN transistor in normal bias

the emitter junction has high resistance.

only majority carriers cross the collector junction.

only holes cross the collector junction.

Je is forward biased and Jc is reverse biased.

the emitter junction has high resistance.

only majority carriers cross the collector junction.

only holes cross the collector junction.

Je is forward biased and Jc is reverse biased.

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Analog Electronics
In an OP-amp differentiator

The amplitude of output is proportional to input

Polarity of input and output is the same

The amplitude of output is proportional to rate of change of input

Output occurs when input is finite and constant

The amplitude of output is proportional to input

Polarity of input and output is the same

The amplitude of output is proportional to rate of change of input

Output occurs when input is finite and constant

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Analog Electronics
The Barkhausen criterion for an oscillator

Both A and C

Loop gain should be less than unity

Loop gain should be unity

The phase of a feedback signal with respect to input should be 0° or 360°

Both A and C

Loop gain should be less than unity

Loop gain should be unity

The phase of a feedback signal with respect to input should be 0° or 360°

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Analog Electronics

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

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

Analog Electronics For a diode, reverse recovery time is defined as the time between the instant diode current becomes zero and the instant reverse recovery current decays to

Analog Electronics For an NPN transistor in normal bias

Analog Electronics In an OP-amp differentiator

Analog Electronics The Barkhausen criterion for an oscillator

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

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

Analog Electronics
For a diode, reverse recovery time is defined as the time between the instant diode current becomes zero and the instant reverse recovery current decays to

Analog Electronics
For an NPN transistor in normal bias

Analog Electronics
In an OP-amp differentiator

Analog Electronics
The Barkhausen criterion for an oscillator