Question

Thermal noise in the communication system due to thermal electrons

(a) Can be eliminated

(b) Cannot be eliminated

(c) Can be avoided upto some extent

(d) None of the mentioned

I had been asked this question during an internship interview.

I would like to ask this question from Signals and Noises in portion Baseband Demodulation and Detection of Digital Communications

Answer 1

Right answer is (b) Cannot be eliminated

Explanation: Thermal noise which cannot be eliminated is caused by the motion of thermal electrons causes degradation in system.