What is the power specification of the IDG?

The correct answer regarding the power specification of the Integrated Drive Generator (IDG) is based on its operating requirements and compatibility with aircraft systems. The IDG typically provides electrical power in a three-phase format, which is crucial for the efficient functioning of various onboard systems.

The specification of 115 AC Volts at 400 Hz is standard for many aircraft applications because it aligns with the requirements of aircraft electrical systems, which benefit from a higher frequency for reduced weight and size of components such as transformers and wires. This configuration allows for the effective delivery of power while minimizing the amount of current needed, thus enhancing the efficiency of the aircraft's electrical systems.

Additionally, the three-phase output is fundamental because it provides a more stable and efficient power supply compared to single-phase systems. This stability is essential for the operation of critical systems onboard an aircraft.

In summary, the specification of 3 phase, 115 AC Volts, and 400 Hz is aligned with standard aviation practices for power generation and distribution, ensuring that the electrical systems meet performance and safety standards in aircraft operations.