Question

An input signal is needed for an oscillator to start.

(a) True

(b) False

I have been asked this question during an interview for a job.

Enquiry is from Oscillators in division Power Amplifiers of Electronic Devices & Circuits

Answer 1

Right option is (b) False

To elaborate: The oscillator is a device which gives an AC output without any input. Oscillator needs an input signal for start. But once the capacitor is charged then, Oscillator can effectively start work without an input signal.