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MMLU-Pro / 12000 / The total copper loss of a transformer as determined by a short-circuit test at…

Problem

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question

The total copper loss of a transformer as determined by a short-circuit test at 20°C is 630 watts, and the copper loss computed from the true ohmic resistance at the same temperature is 504 watts. What is the load loss at the working temperature of 75°C?

category

engineering

options

  1. 630 watts
  2. 672 watts
  3. 810 watts
  4. 945 watts
  5. 750 watts
  6. 560 watts
  7. 717 watts
  8. 126 watts
  9. 588 watts
  10. 504 watts

src

stemez-ElectricalMachines

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