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← TechnologyWhich outcome results when a three-phase motor experiences a ground fault in one winding its windings circuit?
A)Tripping of the ground fault circuit interrupter✓
B)Balanced current increase across all phases
C)Over-voltage condition on the unaffected phases
D)Sustained operation with reduced torque
💡 Explanation
When a ground fault occurs, a current flows through an unintended path to ground via a ground fault circuit interrupter, because insulation failure causes voltage to short circuit, creating a current imbalance that most protection systems detect. Therefore the circuit trips, rather than balanced current or over-voltage which requires alternative grid faults and balanced motor operations.
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