Electronics questions | form six Physics

(5960) Question Category: Short answers

What is the purpose of amplifiers in a phone link?

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(5961) Question Category: Short answers

Sketch the frequency spectrum for 1500​m ​ radio waves modulated by a 4​kHz ​ audio signal.

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(5962) Question Category: Short answers

List down two advantages of digital signals over analogue signals.

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(5963) Question Category: Mathematical Calculation

A carrier of frequency 800​kHz is amplitude modulated by frequencies ranging from 1kHz
to 10kHz. What frequency range does each sideband cover?.

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