Avionics Practice Test: Amplitude & Frequency Modulation — Flashcards | Aircraft & Aviation | FatSkills

Avionics Practice Test: Amplitude & Frequency Modulation — Flashcards

Fast review mode: answers are shown by default so you can skim quickly. Hide them if you want to self-test.

Amplitude & Frequency Modulation quiz covers these topics: amplitude modulation, modulation index, sidebands, frequency domain, single sideband and phase modulation, fm noise suppression effects and modulation index.

Amplitude modulation (AM) and frequency modulation (FM) are two methods of converting data-carrier signals into modulated waves. The main difference between the two is that AM modifies the carrier wave, while FM modifies the carrier wave frequency. 

Here are some other differences between AM and FM:
Amplitude: In AM, the amplitude of the signal is varied to incorporate sound information. In FM, the frequency of the carrier signal is varied.
Frequency and phase: In AM, the frequency and phase remain the same. In FM, the amplitude and phase remain the same.
Modulation index: In AM, the modulation index varies from 0 to 1. In FM, the modulation index is always greater than one.
Sound quality: AM has poorer sound quality than FM.
Interference: FM is less prone to interference than AM. However, FM signals are impacted by physical barriers.
Bandwidth: AM has a lower bandwidth than FM.
Transmission distance: AM is cheaper and can be transmitted over long distances

1 of 58 • Ready
In Amplitude Modulation, the instantaneous values of the carrier amplitude changes in accordance with the amplitude and frequency variations of the modulating signal.
True
Shortcuts
← Prev Space Show / hide → Next
Turn this into a study set.
Sign in with Google to save tricky questions to your reminder list and resume on any device.
Sign in with Google Free • no extra password
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.