What does an electric motor provide in a power transmission system?

An electric motor serves as a primary source of mechanical power in a power transmission system by converting electrical energy into mechanical energy. This process allows the motor to drive various machinery and equipment, enabling them to perform work. The ability to provide consistent and reliable mechanical power is fundamental for the efficient operation of many industrial applications, such as conveyors, pumps, and fans.

While other options mention aspects related to electrical energy, control, and backup power, they do not capture the essential function of the electric motor in the context of power transmission systems. For instance, while electric motors also allow for speed and torque control, which is crucial for adapting to different operational demands, this ability does not define the primary role of the motor itself. Additionally, backup power is generally associated with uninterruptible power supplies or generators rather than the function of the motor in producing mechanical power from electrical sources.