Electrical Engineering · Three-Phase Systems
For a balanced three-phase system, what is the correct formula for total active power (P) in terms of line voltage (VL), line current (IL), and power factor (cos φ)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1P = √3 VL IL cos φ✓
- 2P = 3 VL IL cos φ
- 3P = VL IL cos φ
- 4P = 3√3 VL IL cos φ
Correct answer
P = √3 VL IL cos φ
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