What is the function of a relay in an aircraft electrical circuit, and what is a typical example?

What is the function of a relay in an aircraft electrical circuit, and what is a typical example?

• A. A relay increases voltage to drive motors.
• B. A relay stores charge for later use.
• C. A relay converts AC to DC.
• D. A relay uses a low-current control signal to switch a high-current circuit, such as turning on a hydraulic pump.

Answer: (D)