If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is:
Answer(s): C
Two sinusoidal signals have the same amplitude (A) and the same frequency (f). They differ in phase by 180 degrees. If these two signals are added together, the result is a sinusoidal signal having an amplitude of:
Answer(s): A
Which of the following correctly lists the lowest frequency band to the highest frequency band?
The conversion of an analog speech signal to a pulse code modulation (PCM) digital signal involves all of the following steps EXCEPT:
Answer(s): E
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