SSC MTS EXAM

Detailed explanation-1: -Commutators and brushes are used on all DC generators and DC motors. They are also used on some AC motors such as the repulsion, synchronous, and universal motors. All generators produce a sine wave, or AC currents when the rotor turns in the magnetic field.

Detailed explanation-2: -To generate motion in a three-phase linear motor there must be switching between the phases to energize appropriate windings. The process of switching between the phases is called commutation. In order to create the desired movement a controller must determine which phase needs to be switched on.