Electrical Engineering · Three-Phase Systems
If the load on a three-phase system is unbalanced, the power calculation becomes more complex because __________.
- 1the line current becomes zero
- 2the line and phase voltages become equal
- 3the current in each phase differs, and the total power must be calculated by adding individual phase powers✓
- 4the power factor becomes unity
Correct answer
the current in each phase differs, and the total power must be calculated by adding individual phase powers
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