In electrical systems, what does AC stand for?

In electrical systems, the term AC stands for Alternating Current. This is a type of electrical current that reverses direction periodically, as opposed to direct current (DC), which flows in only one direction. Alternating current is commonly used in power supplies, as it is more efficient for long-distance transmission of electricity, allowing for easier voltage transformation through transformers.

Alternating Current is characterized by its waveform, typically a sinusoidal wave, and is the standard form of electricity provided by utility companies for household and commercial use. This versatility and efficiency in transmission make it a pivotal concept in electrical engineering and maintenance.

Understanding Alternating Current is critical for maintenance technicians, as it is foundational for working with electrical systems, circuit design, and troubleshooting faults in various devices and equipment.