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Network TheoryThree-Phase Circuits

In the two-wattmeter method for a balanced three-phase load, total real power is equal to?

  • AW1-W2
  • BW1+W2
  • Csqrt(3)(W1+W2)
  • D3(W1-W2)
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Correct Answer: B. W1+W2
Explanation: For a balanced three-phase load measured by the two-wattmeter method, total real power is the algebraic sum W1+W2.
Reference: Standard network theory: two-wattmeter method
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