Automotive Electronics Practice Test

Which of the following components is not part of the starter motor assembly?

1. Flywheel

2. Field coils

3. Commutator

4. Armature

The correct answer is: Flywheel

The flywheel is not considered a part of the starter motor assembly. In automotive design, the starter motor is responsible for initiating the engine's operation by turning the flywheel, which is mounted on the engine's crankshaft. The starter motor itself comprises various components including field coils, a commutator, and an armature. Field coils generate a magnetic field that interacts with the armature, which is the rotating part of the motor. The commutator functions to reverse the current within the armature windings, ensuring that the motor continues to spin in the same direction. Understanding how these components work together to enable the starter motor to function is essential in automotive electronics. The flywheel, while crucial for the overall starting system, is a separate entity used to connect the starter motor to the engine, not an integral part of the starter motor itself.