railway RRB JE (CBT I + CBT II) Mock Test 2024 Electronic Mechanic Electronic Devices and Circuits Oscillators
Which of the following statements is not true?
1
All oscillators satisfy the Barkhausen criterion.
2
An oscillator is an amplifier that supplies its own input signal.
3
An oscillator is a circuit that converts dc to ac
4
In-phase feedback is called positive feedback