railway RRB JE (CBT I + CBT II) Mock Test 2024 Analog Electronics Oscillators and Feedback Amplifier Feedback Amplifier
Feedback is said to be positive if
1
the feedback signal gets subtracted from the input signal
2
the feedback signal gets added to the input signal
3
any increase in the output signal results in a feedback signal which on being mixed with the input signal causes further increase in magnitude of the output signal
4
none of these