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1. To obtain very high I/P and O/P impedances in a feedback amplifier, the topology used is





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MCQ->To obtain very high I/P and O/P impedances in a feedback amplifier, the topology used is....
MCQ->Assertion (A): A large negative feedback is deliberately introduced in an amplifier to make its gain independent of variation is in parameters of active device and other components.Reason (R): A large negative feedback results in a high value of return difference compared to unity which makes the feedback gain inversely proportional to feedback factor.

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MCQ->To obtain very high input and O/P impedance in a feedback amplifier, the type of feedback utilized....
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MCQ->An amplifier without feedback has a voltage gain of 50, input resistance of 1 kΩ and output resistance of 2.5 kΩ. The input resistance of the current shunt -ve feedback amplifier using the above amplifier with a feedback factor of 0.2 is....
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