If the noise figures of the first stage of a two stage cascade networ – McqOptions

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1.	If the noise figures of the first stage of a two stage cascade network is 8 dB and the noise figure of the second stage is 7 dB and the gain of the first stage is 10, then the noise figure of the cascade is:
A.	8. 6 dB
B.	7.6 dB
C.	5.6 dB
D.	8.9 dB
Answer» B. 7.6 dB

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