Select the correct statement regarding transmission systems. a. only unguided systems need to worry about EM noise since most guided system use signal balancing or shielding b. signal attenuation is independent of the baseband or carrier frequency c. the type of modulation method selected will influence digital data capacity d. all statements are correct

Select the correct statement regarding transmission systems. a. only unguided systems need to worry about EM noise since most guided system use signal balancing or shielding b. signal attenuation is independent of the baseband or carrier frequency c. the type of modulation method selected will influence digital data capacity d. all statements are correct

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter17: Commercial And Industrial Air-conditioning Control Systems

Section: Chapter Questions

Problem 25RQ

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Concept explainers

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.

Question

Select the correct statement regarding transmission systems.

a. only unguided systems need to worry about EM noise since most guided system use signal balancing or shielding

b. signal attenuation is independent of the baseband or carrier frequency

c. the type of modulation method selected will influence digital data capacity

d. all statements are correct

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