Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • The positive feedback is required by an amplifier to act an oscillator. The feedback here means :Option: 1 External input is necessary to sustain ac

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

Option: 1

External input is necessary to sustain ac signal in output.


Option: 2

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


Option: 3

Feedback can be achicved by LR network.
 


Option: 4

The basc-collector junction must be forward biased.
 


Answers (1)

best_answer

\rightarrow The feedback here mean a portion of the output power is retuned back to the input

\rightarrow The positive feedback is  the feedback which is in phase with the input 

\rightarrow The negative feedback is the feedback which is out of phase with resped to input

\rightarrow The correct option is (2)

Posted by

sudhir.kumar

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

Calculate JEE Main 2025 rank using predictor tool for admission to top IITs, NITs, IIITs
anam-khan

NTA drops 1 out of 9 flagged errors from JEE Mains final answer key 2025
anam-khan

Consumer protection watchdog warns coaching centres against misleading ads ahead of IIT-JEE Main results

Latest Question