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Communication Systems

Q1: What is the purpose of peak clipper circuits in radio transmitters?

A To prevent overmodulation

B To reduce bandwidth

C To increase bandwidth

D To regulate oscillator I/P voltage

ANS:A - To prevent overmodulation

Modulation index should be less than or equal to 1. If modulation index is greater than one, then over modulation occurs. To prevent over modulation in radio transmitters peak clipper circuits are used.



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