Question

If the output of a 22-dB gain amplifier is connected to the input of a 23-dB...

If the output of a 22-dB gain amplifier is connected to the input of a 23-dB gain amplifier, the total gain is _________dB. The overall power ratio is_________.

a. 22, 45

b. 45, 23

c. 45, 32,000

d. 32,000, 45,000

Please state your work clearly and if it's handwritten, please write legibility so that I am able to understand your explanation. Thanks for your help.

Science   Advanced-Physics   
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Homework Answers

Answer #1

The power ration of the first amplifier is can be calculated from

...............................(1)

The power ratio of the second amplifier can be calculated using

................................(2)

Multiplying equation 1 and 2.

So, the total gain in decibel is

And overall power ratio is

So, the correct option is c. 45, 32000.

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