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Thermal noise is a synonym of ________(a) Atmospheric noise(b) shot noise(c) Johnson noise(d) transit time noiseThis question was posed to me in an interview for job.This is a very interesting question from Costas Loop in portion Double Sideband Suppressed Carrier Modulation of Analog Communications

Answer»

Correct choice is (C) Johnson noise

Easy explanation: THERMAL noise is a type of internal noise in communication. It is produced due to thermal EXCITATION of the free electrons in the CIRCUIT. It is also KNOWN as Johnson noise.



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