SSC MTS EXAM

Detailed explanation-1: -The speed range of brushless DC motor is high because of the absence of mechanical limitations due to commutator and brushes. In brushed DC motors, the electrical noise is more due to arc between the brushes and commutator. There is no electrical noise present in case of brushless DC motor.

Detailed explanation-2: -The inherent noise issue with many types of motors is the brushes. Brushes create mechanical and electrical noise due to friction against the commutator, as well as arcing caused by current conducting through the brush and commutator.

Detailed explanation-3: -Electronic Drive. The primary difference between brushed and brushless motors is that brushed motors are mechanically driven and brushless are electronically driven. In brushed motors, the stator (stationary part) contains permanent magnets while the rotor (moving part) contains electromagnets.