The positive feedback | Semiconductor Electronic

JEE MAIN 2022

26-06-22 S2

Question

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

Select the correct option:

External input is necessary to sustain ac signal in output

A portion of the output power is returned back to the input.

Feedback can be achieved by LR network

the base-collector junction must be forward biased.

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

When the amplifier connects with positive feedback, it acts as the oscillator the feedback hear is positive

Question Tags

JEE Main

Physics

Easy

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