What design advantage did Tesla's AC induction motor offer over previous electric motors?
Answer
It relied on no brushes or commutators that wore out quickly.
Tesla's induction motor design was noted for its elegant simplicity and ruggedness. By eliminating brushes and commutators—mechanical parts that were prone to rapid wear and tear in earlier motor designs—the induction motor was far more reliable and efficient for industrial use. This durability made it a practical and commercially viable solution for factories and large-scale mechanical applications.

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Biography of Nikola Tesla, Who Inventor of (AC) Electricity - YouTube
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