capacitors are mainly used for radio frequency tuning?
Correct answer: B. Air
- A. Paper
- B. Air
- C. Mica
- D. Electrolytic
Explanation
Air capacitors, especially variable types, have low losses and stable performance at high frequency, making them suitable for radio tuning. Electrolytic and paper capacitors are unsuitable for RF tuning because of higher losses and parasitic effects.
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