A three-phase induction motor in a manufacturing plant is drawing significantly more current in one phase compared to the other two, leading to excessive heat and vibration. Which of the following is the most likely cause of this condition and its primary consequence?
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A
Low power factor, resulting in penalty charges from the utility.
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B
Voltage unbalance, resulting in a disproportionately larger current unbalance and motor overheating.
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C
Harmonic distortion, resulting in reduced motor torque and speed.
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D
An oversized motor, resulting in inefficient operation at partial load.