Tests the basic principle of Frequency Modulation (FM), where the carrier frequency varies according to the instantaneous amplitude of the modulating signal while the carrier amplitude remains constant.
In frequency modulation, the amplitude of carrier waves remain same but its frequency changes proportion to:
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Question context
This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the Engineering College Admission Test (ECAT) preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.