An amplifier has a noise equivalent temperature of 170 K. If the ampli – McqOptions

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1.	An amplifier has a noise equivalent temperature of 170 K. If the amplifier is used with a source having an equivalent noise temperature of TS=450 K, the output noise power of the amplifier is:
A.	-50 dBm
B.	-60 dBm
C.	-60.7 dBm
D.	-55 dBm
Answer» D. -55 dBm

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