In AM, the centpercent modulation is ach

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Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

In AM, the centpercent modulation is achieved when

Options:

Carrier amplitude = signal amplitude

Carrier amplitude  signal amplitude

Carrier frequency = signal frequency

Carrier frequency  signal frequency

Correct Answer:

Carrier amplitude = signal amplitude

Explanation:

When signal amplitude is equal to the carrier amplitude, the amplitude of carrier wave varies between 2A and zero.

$m_a=\frac{Amplitude\, charge\, of\, carrier}{Amplitude\, of\, normal\, carrier}=\frac{2A-A}{A}×100=100\%$