Define "power quality" in electrical terms.

Power quality refers to the characteristics of the electrical power supply that influence how well electrical devices operate. This concept is crucial as it encompasses several factors such as voltage levels, frequency, waveforms, and the presence of electrical noise or disturbances in the system. High power quality means that the electrical supply is consistent and stable, allowing devices to perform as intended without interruptions or malfunctions.

For example, if there are significant fluctuations in voltage or if there are frequent interruptions (transients), it can lead to equipment failure or decreased performance. Understanding power quality is essential for ensuring the reliability and longevity of electrical equipment, making it a key focus in both industrial and commercial electrical systems.