Exam-style question
Try this first
A diagram shows a carrier wave with amplitude varying sinusoidally while frequency is constant. What is the main advantage of this modulation?.
- A.Higher bandwidth
- B.Easier demodulation
- C.Less susceptible to noise
- D.Lower power consumption
Model answer
What a good answer should say
- Easier demodulation
Explanation
Why this works
Evidence: the diagram depicts amplitude modulation. Interpretation: AM signals can be demodulated using simple envelope detectors.
Implication: this simplicity is an advantage. Conclusion: the correct answer is Easier demodulation.
Common mistake
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