# Give the expression for modulation index for AM and FM.

Give the expression for modulation index for AM and FM.

1.Modulation index for AM

ma=Vm / Vc

Where Vm is modulating voltage

Vc is the carrier voltage

2.Modulation index for FM

mf=δ /fm

where δ is the deviation

fm is the modulating frequency

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Answer : Derive a mathematical expression for AM wave.

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Description : What is the full form of ‘AM’ regarding radio broadcasting? (1) Amplitude Movement (2) Anywhere Movement (3) Amplitude Matching (4) Amplitude Modulation