The amplitude of 15 ( 1000 ) is modulated by 10 ( 4 ) signal. The amplitude modulated signal contains frequency (ies) of ( A ) 500Hz ( B ) 2Hz ( C ) 250Hz ( D ) 498Hz ( E ) 502Hz Choose the correct answer from the

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Quantrex Academy · Accepted Answer

Correct answer: B. A, D and E only

The frequency components of amplitude modulated signal are ${f}_{c} - {f}_{m}, {f}_{c}, {f}_{c} + {f}_{m}$

Here, carrier wave frequency is

${f}_{c} = \dfrac{100\pi}{2\pi} = 500Hz$

Modulating wave frequency is

${f}_{m} = \dfrac{4\pi}{2\pi} = 2Hz$

So, the frequencies in amplitude modulated signal are $= 498Hz, 500Hz, 502Hz$

The amplitude of 15 ( 1000 ) is modulated by 10 ( 4 ) signal. The...

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