Which symptom indicates imbalanced loading in a three-phase induction motor operating under high load?

💡 Explanation

When load is imbalanced across a three-phase induction motor, asymmetrical magnetic fields are created because unequal currents flow in each phase, leading to torque reduction and increased mechanical vibrations. Therefore, reduced torque and increased vibration manifest, rather than balanced behavior, elevated power factor or stable voltage which depend balanced operation.

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