Difficulty: Easy
Correct Answer: Both the statements are true
Explanation:
Introduction / Context:
Demodulation recovers baseband information from modulated RF/IF signals. Different modulations require different detectors, but some devices are iconic: the diode detector for AM and the frequency discriminator for FM.
Given Data / Assumptions:
Concept / Approach:
Statement 1: In consumer AM radios and many simple receivers, a diode is indeed the most common demodulating element. Statement 2: A discriminator is a classic FM detector topology converting instantaneous frequency deviations to voltage. Therefore both statements are correct as general truths.
Step-by-Step Solution:
Verification / Alternative check:
Service manuals show diode detectors in AM paths and discriminators (or quadrature/PLL) in FM paths. Textbooks corroborate these standard choices.
Why Other Options Are Wrong:
Negating either statement contradicts widespread receiver designs; SSB demodulation generally uses product detectors, not simple diodes.
Common Pitfalls:
Assuming exclusivity: other detectors exist (synchronous AM, PLL FM), but the statements remain broadly true.
Final Answer:
Both the statements are true
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