The modulation index of FM is given byA. Modulating frequency /Frequency deviationB. Frequency deviation/ modulating frequencyC. Modulating frequency/ carrier frequencyD. Carrier frequency / Modulating frequency
Question
The modulation index of FM is given byA. Modulating frequency /Frequency deviationB. Frequency deviation/ modulating frequencyC. Modulating frequency/ carrier frequencyD. Carrier frequency / Modulating frequency
Solution
The modulation index of Frequency Modulation (FM) is given by option B. Frequency deviation/ modulating frequency. This is a measure of the extent of variation in a carrier signal according to the information being sent. It's calculated by taking the ratio of the frequency deviation (the difference in frequency at the extremes of the signal) to the frequency of the modulating signal.
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In Frequency Modulation
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