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← ScienceWhich risk increases when a motor's commutation circuit capacitance degrades?
A)Elevated electromagnetic interference emissions✓
B)Bearing wear from increased vibration
C)Increased winding insulation breakdown
D)Reduced brush contact area
💡 Explanation
Degradation causes increased transient currents during switching because the circuit's impedance matching is disrupted during rapid turn-on/off via self inductance therefore increasing EMI emissions, rather than mechanical failures or gradual insulation degradation, under normal operating electrical stresses.
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