What is the inherent current limiter present for a rotating motor armature called?

The inherent current limiter present for a rotating motor armature is known as Counter Electromotive Force (CEMF). When the motor armature rotates within a magnetic field, it generates CEMF, which acts in opposition to the applied voltage. This opposing voltage reduces the overall current flowing into the armature during operation. Essentially, as the motor speeds up and the CEMF increases, it limits the amount of current that can flow through the motor, thus preventing excessive current draw that could lead to overheating or damage.

Understanding CEMF is crucial for grasping how electric motors operate under different load conditions, as it plays a vital role in improving the efficiency and lifespan of the motor. The other options, while related to electrical principles in motors, do not specifically refer to the mechanism that limits current in this context.