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Question
The process of superimposing a low frequency signal on a high frequency wave is
The process of superimposing a low frequency signal on a high frequency wave is
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Solution
The correct option is B Modulation
The main advantage of high frequency signals is that they can be transmitted over very long distances by dissipating very small power. Thus a low frequency audio signals must be sent along with the high frequency signals for communication. This can be done by superimposing electrical audio signals on a high frequency wave called the carrier wave. The carrier wave is generated from radio-frequency oscillators and is undamped in nature. Thus, when the audio-frequency signal is superimposed on a carrier wave, the resulting wave gets all the characteristics of the audio signal. The method of superimposing an audio signal over the carrier wave is called modulation.
The main advantage of high frequency signals is that they can be transmitted over very long distances by dissipating very small power. Thus a low frequency audio signals must be sent along with the high frequency signals for communication. This can be done by superimposing electrical audio signals on a high frequency wave called the carrier wave. The carrier wave is generated from radio-frequency oscillators and is undamped in nature. Thus, when the audio-frequency signal is superimposed on a carrier wave, the resulting wave gets all the characteristics of the audio signal. The method of superimposing an audio signal over the carrier wave is called modulation.
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