The full load copper loss and iron loss of a transformer are 6400 W and 5000 W respectively. the copper loss and iron loss at half load will be , respectively

  1. 3200 W and 2500 W
  2. 3200 W and 5200 W
  3. 1600 W and 1250 W
  4. 1600 W and 5000 W
Answer: 1600 W and 5000 W

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