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Power ElectronicsEfficiency & Losses

If a converter delivers 900 W output while drawing 1000 W input, its efficiency is?

  • A10%
  • B90%
  • C100%
  • D111%
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Correct Answer: B. 90%
Explanation: Efficiency=Pout/Pin=900/1000=0.9=90%.
Reference: Standard power electronics: efficiency & losses
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