CALCULATE THE TOTAL MODULATION INDEX WHEN A CARRIER WAVE IS BEING MODULATED BY TWO MODULATING SIGNALS WITH MODULATION INDICES 0.8 AND 0.3.Select one:a. 0.6788b. 0.5545c. 0.8544d. 0.9999

Find the modulation index of an AM wave having 8 V variation where maximum amplitude of the wave is 9 V.

FOR OVER MODULATION, THE VALUE OF MODULATION INDEX M ISSelect one:a. M > 1b. NOT PREDETERMINEDc. M = 1d. M < 1

The message signal m(t)=10sinc(400t) frequency modulates the carrier c(t)=100cos2πfc​t. The modulation index βf​ is 6 , where we have βf​=Wkf​max[∣m(t)∣]​. (a) (7 marks) Write an expression for the modulated signal u(t). (b) (7 marks) What is the maximum frequency deviation of the modulated signal? (c) (7 marks) What is the power content of the modulated signal? (d) (9 marks) Find the bandwidth of the modulated signal.

The modulation index of FM is given byA. Modulating frequency /Frequency deviationB. Frequency deviation/ modulating frequencyC. Modulating frequency/ carrier frequencyD. Carrier frequency / Modulating frequency

n FM the carrier may disappear at a particular value of modulation indexSelect one:a. Trueb. False