Which systems are primarily responsible for the aircraft's electrical power?

The correct answer highlights that both AC (Alternating Current) and DC (Direct Current) electrical systems are vital for supplying electrical power in an aircraft. These two systems work together to ensure that various electrical components function properly. AC systems are generally used for high-power requirements, such as powering the aircraft's generators and systems that require significant electrical loads. Meanwhile, DC systems typically power lower voltage equipment, such as lighting and control systems, providing a balanced source of power throughout the aircraft.

AC and DC systems provide redundancy; in cases where one system fails, the other can often take over to maintain functionality, enhancing the reliability of the aircraft's electrical power. These systems together ensure that critical operations like flight instrumentation, navigation systems, and communication equipment are consistently powered, contributing to overall safety and efficiency in aircraft operations.