Which component provides electrical contact with the rotating commutator?

Which component provides electrical contact with the rotating commutator?

• A. Bearings
• B. Brushes
• C. Rotor
• D. Stator

Answer: (B)

Electric current reaches the rotating windings through sliding contacts called brushes. These brushes are stationary and press against the rotating commutator, which is mounted on the rotor and distributed into segments tied to the windings. As the rotor turns, the brushes maintain electrical connection to the appropriate segments, allowing current to flow into the rotor windings and enabling proper operation. Bearings are mechanical supports, not electrical contacts. The rotor is the moving assembly that hosts the windings and commutator, but it doesn’t provide the external electrical connection. The stator is the stationary magnetic field source and also does not contact the rotating commutator.

Electric current reaches the rotating windings through sliding contacts called brushes. These brushes are stationary and press against the rotating commutator, which is mounted on the rotor and distributed into segments tied to the windings. As the rotor turns, the brushes maintain electrical connection to the appropriate segments, allowing current to flow into the rotor windings and enabling proper operation. Bearings are mechanical supports, not electrical contacts. The rotor is the moving assembly that hosts the windings and commutator, but it doesn’t provide the external electrical connection. The stator is the stationary magnetic field source and also does not contact the rotating commutator.