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Carrier signal in modulation technique is _______ signal.

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Carrier signal in modulation technique is _______ signal.

(a) High frequency

(b) Low frequency

(c) High amplitude

(d) Low amplitude

This question was posed to me by my school principal while I was bunking the class.

Enquiry is from Amplitude Modulation in portion Modulation Techniques for Mobile Radio of Wireless/Mobile

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Correct option is (a) High frequency

Easiest explanation: Carrier signal in modulation technique is a high frequency signal. In amplitude modulation, the amplitude of a high frequency carrier signal is varied in accordance to the instantaneous amplitude of the modulating signal.

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