Question

The increase or decrease in the frequency around the carrier frequency is termed as

Answer 1

Ques. The increase or decrease in the frequency around the carrier frequency is termed as

A. Figure factor

B. Frequency deviation

C. Modulation index

D. Frequency pectrum

Answer:

The correct answer is option B. Frequency deviation.

Explanation:

• In FM, the carrier frequency shifts away from its core frequency as the modulating signal's amplitude changes. Frequency Deviation is the term for this.
• The term "frequency deviation" refers to the degree of variation in carrier frequency caused by the amplitude of the input modulating signal.
• As the input's amplitude changes, the carrier frequency fluctuates between f-max and f-min.
• Frequency deviation is the difference between fmax and fc.
• The largest variation between an FM modulated frequency and the nominal vector frequency is referred to as frequency deviation in FM radio.

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