The core used in high frequency transformer is usually___________?
Correct answer: C. air core
- A. copper core
- B. cost iron core
- C. air core
- D. mild steel core
Explanation
At high frequencies, an air core avoids the large hysteresis and eddy-current losses associated with iron cores. Ferrite is also widely used in practical high-frequency transformers, but air core is the intended choice among these options.
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