Use the figure below to answer the following question. What is the power gain when the power output is 600 mW?
A) 30 db
B) 26 db
C) 34 db
D) 32 db
E) 28 db

Question

Use the figure below to answer the following question.  What is the power gain when the power output is 600 mW?
A) 30 db 
B) 26 db 
C) 34 db 
D) 32 db 
E) 28 db

Quizplus · Accepted Answer

The power gain can be found by subtracting the input power (in dBm) from the output power (in dBm). At an output power of 600 mW, the corresponding power in dBm is 27 dBm. The input power at this point is -5 dBm, which can be found by tracing a vertical line up from 600 mW until it intersects with the curve for the input power (in dBm). Therefore, the power gain is 27 dBm - (-5 dBm) = 32 dB.

Use the Figure Below to Answer the Following Question