Easy MCQ +4 / -1 PYQ · JEE Mains 2022

The positive feedback is required by an amplifier to act an oscillator. The feedback here means :

  1. A External input is necessary to sustain ac signal in output.
  2. B A portion of the output power is returned back to the input. Correct answer
  3. C Feedback can be achieved by LR network.
  4. D The base-collector junction must be forward biased.

Solution

<p>Feedback means a portion of the output power is fed to the inputs.</p>

About this question

Subject: Physics · Chapter: Electronic Devices · Topic: Communication Systems

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