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The audio signal having frequency 500Hz and voltage 2.6V, shows a deviation of 5.2KHz in a Frequency Modulation system. If the audio signal voltage changes to 8.6V, calculate the new deviationobtained. a. 17.2 KHz b. 19.6 KHz c. 25.6 KHz d. 14.6 KHz |
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Answer» a. 17.2 KHz Deviation in FM is given by Δf = kf * Am Therefore, kf = Δf/ Am = 5.2/2.6= 2 When voltage changes to 8.6V = Am New frequency deviation Δf = kf * Am = 2* 8.6= 17.2 KHz |
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