Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines ?
Correct answer: D. Silicon steel
- A. None of these
- B. Chromium steel
- C. Molybdenum steel
- D. Silicon steel
Explanation
Silicon steel has low hysteresis and eddy-current losses, so it is used in transformer cores, motors, and generators. Chromium and molybdenum steels improve mechanical or high-temperature properties rather than providing the main magnetic energy-saving benefit.
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