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The amplitude of15 \sin (100 \pi \mathrm{t}) is modulated by 10 \sin (4 \pi \mathrm{t}) signal. The amplitude modulated signal contains frequencies of

A.\, \, 500 \mathrm{~Hz}

B. \, \, 2 \mathrm{~Hz}

C. \, \, 250 \mathrm{~Hz}

D. \, \, 498 \mathrm{~Hz}

E. \, \, 502 \mathrm{~Hz}

Choose the correct answer from the options given below :

Option: 1

A and B only


Option: 2

A and D only


Option: 3

A and C only


Option: 4

A, D and E only


Answers (1)

best_answer

\begin{aligned} & \text { Signal }=15 \sin (1000 \pi \mathrm{t}) \text { is modulated by } 10 \sin (4 \pi \mathrm{t}) \\ & \omega_{\mathrm{m}}=4 \pi \\ & 2 \pi \mathrm{f}_{\mathrm{m}}=4 \pi \\ & \mathrm{f}_{\mathrm{m}}=2 \mathrm{H} \end{aligned}

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Sanket Gandhi

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