Which of the following is the most likely source of harmonics in a transformer ?
Correct answer: D. Core saturation
- A. poor insulation
- B. Overload
- C. loose connections
- D. Core saturation
Explanation
A saturated core draws a nonsinusoidal magnetizing current, and nonsinusoidal current contains harmonics. Poor insulation, overload, and loose connections do not directly create the main harmonic source in a transformer.
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