Which of the following is NOT a characteristic of Frequency Modulation?

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Multiple Choice

Which of the following is NOT a characteristic of Frequency Modulation?

The correct answer is that Frequency Modulation (FM) does not vary the amplitude of the signal. Instead, in FM, the primary characteristic is that it varies the frequency of the carrier wave while keeping the amplitude relatively constant. This frequency variation allows FM to transmit information, such as audio signals, more effectively compared to Amplitude Modulation (AM). FM is recognized for its superior sound quality, which makes it a popular choice for music broadcasting. This is primarily because the modulation technique minimizes the impact of noise and interference, ensuring clearer audio transmission and higher fidelity. Amplitude Modulation, on the other hand, can be more susceptible to interference because fluctuations in amplitude can directly affect the sound quality. Thus, FM's resistance to noise further highlights its advantages over AM modulation. Understanding these characteristics underlies the significance of frequency variation as opposed to amplitude variation in the context of radio transmission. In summary, the defining feature of FM is that it varies frequency, not amplitude, which is why option C is the correct answer.

The correct answer is that Frequency Modulation (FM) does not vary the amplitude of the signal. Instead, in FM, the primary characteristic is that it varies the frequency of the carrier wave while keeping the amplitude relatively constant. This frequency variation allows FM to transmit information, such as audio signals, more effectively compared to Amplitude Modulation (AM).

FM is recognized for its superior sound quality, which makes it a popular choice for music broadcasting. This is primarily because the modulation technique minimizes the impact of noise and interference, ensuring clearer audio transmission and higher fidelity. Amplitude Modulation, on the other hand, can be more susceptible to interference because fluctuations in amplitude can directly affect the sound quality. Thus, FM's resistance to noise further highlights its advantages over AM modulation.

Understanding these characteristics underlies the significance of frequency variation as opposed to amplitude variation in the context of radio transmission. In summary, the defining feature of FM is that it varies frequency, not amplitude, which is why option C is the correct answer.

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