Calculate the modulation index in an FM signal when fm (modulating frequency) is 250Hz and Δf (frequency deviation) is 5KHz.
A. 20
B. 35
C. 50
D. 75
Answer:A
Calculate the modulation index in an FM signal when fm (modulating frequency) is 250Hz and Δf (frequency deviation) is 5KHz.
A. 20 B. 35 C. 50 D. 75
Explanation: Modulation index is the measure of how much the modulation parameter changes from its un modulated value. The modulation index of FM is given by