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Electromagnetic Field Theory - Engineering

Q1:

An antenna having an effective temperature of 27°K is fed into a microwave amplifier that has an effective noise temperature of 30 K. Calculate the available noise power per unit bandwidth

A 30 K

B 57 K

C 27 K

D 3K, K is Boltzmann constant

ANS:B - 57 K

where K is Boltzmann constant.