Exam-style question
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In which scenario would AM be preferred over FM?.
- A.When transmitting music with high fidelity.
- B.When long‑range communication with limited power is needed.
- C.When using a compact, low‑cost receiver.
- D.When avoiding interference from electrical equipment.
Model answer
What a good answer should say
- When using a compact, low‑cost receiver.
Explanation
Why this works
Define both: AM modulation is simpler to generate and demodulate, FM requires more complex circuitry. Identify key difference: AM receivers are cheaper and smaller.
Explain when each applies: For simple, inexpensive devices or legacy systems, AM is chosen; FM is chosen when quality is paramount. Conclude: The scenario that favours AM is the use of a compact, low‑cost receiver.
Common mistake
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