$100 M H z$ FM carrier wave frequency is modulated by $10 k H z$ sinusoidal modulating signal. If the maximum frequency deviation is $50 k H z$ , what is the value of modulation index?

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Solution

The correct option is A 5
The modulation index in frequency modulation is the ratio of frequency deviation ( $Δ f$ ) to the frequency of the modulating signal ( $f_{m}$ ).
i.e Modulation index $= \frac{Δ f}{f_{m}} = \frac{50 k H z}{10 k H z} = 5$

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100 MHz FM carrier wave frequency is modulated by 10 kHz sinusoidal modulating signal. If the maximum frequency deviation is 50 kHz, what is the value of modulation index?

The correct option is A 5The modulation index in frequency modulation is the ratio of frequency deviation (Δf) to the frequency of the modulating signal (fm). i.e Modulation index =Δffm=50 kHz10 kHz=5

$100 M H z$ FM carrier wave frequency is modulated by $10 k H z$ sinusoidal modulating signal. If the maximum frequency deviation is $50 k H z$ , what is the value of modulation index?

The correct option is A 5
The modulation index in frequency modulation is the ratio of frequency deviation ( $Δ f$ ) to the frequency of the modulating signal ( $f_{m}$ ).
i.e Modulation index $= \frac{Δ f}{f_{m}} = \frac{50 k H z}{10 k H z} = 5$