Question

Which one of the following statement is false?

(a) High Frequency mixers are generally noisier

(b) Voltage of impulse noise is independent of bandwidth

(c) Thermal noise is not dependent on frequency

(d) Flicker noise occurs at low frequency

I have been asked this question in an interview for internship.

My question is based upon Noise in AM in portion Noise of Analog Communications

Answer 1

Right option is (b) Voltage of impulse noise is independent of bandwidth

The best I can explain: Impulse noise includes unwanted noise which is almost instantaneous and has a sharp sound. High level of such noise may damage internal organs. It depends on bandwidth of the signal.