What is the function of a transformer in an aircraft electrical system?

The function of a transformer in an aircraft electrical system is primarily to change the voltage level of electrical power. Transformers operate on the principle of electromagnetic induction and are used to step up (increase) or step down (decrease) voltage levels while maintaining the same frequency. This capability is crucial in aircraft systems, where different components may require specific voltage levels to operate effectively.

For example, certain systems in an aircraft might require higher voltages to function efficiently, while others may need lower voltages to ensure safety and compatibility with sensitive electronic devices. By adjusting the voltage levels, transformers help optimize the distribution of electrical power throughout the aircraft, enhancing both efficiency and safety.

The other choices focus on functions that are not associated with transformers. Storing electrical energy pertains to capacitors or batteries, filtering electrical noise relates to inductors and capacitors used in specific filtering circuits, and isolating circuits typically involves isolation transformers or circuit breakers. Each of these functions addresses different aspects of electrical management, but they do not define the primary role of a transformer in an aircraft electrical system.