Answer to Question #116609 in Electrical Engineering for Moel Tariburu

Question #116609
a) The information signal given Vm (t) = 0.20 sin (2 x 10^3 t ) + 0.25 sin (2 x 10^3 t)
is superimposed over the carrier Vc (t) = 10 sin (2π x 100 x 10^6 t) V to give AM modulated wave. Calculate the AM modulation index, bandwidth of AM signal and total power radiated when AM wave is transmitted using half wave dipole antenna.

b) A 2000 Hz modulating signal of the maximum amplitude of 2 V is fed into a FM
generator produces a frequency deviation of 4.25 kHz. What is the modulation index? If
the amplitude of the modulating voltage is kept constant but its frequency is raised to 6
kHz, what is the new frequency deviation (∆f).
Expert's answer

As per the question,

Hence, amplitude modulation,

band width of AM =

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