The electrical load placed on the APU generator must not exceed ________.

The correct load limit for the APU generator is set at 40 kVA. This specification is important because exceeding the maximum load can lead to overheating, reduced lifespan of the generator, or even failure. It ensures that the APU operates effectively and safely, supplying power for the aircraft's systems without risking damage to itself or other electrical components.

The load limit is determined by the design parameters of the APU, which are calibrated to provide optimal performance under specified conditions. This value is vital for maintaining the integrity of the power system in the aircraft, allowing for essential systems to operate while giving consideration to the total electrical requirements during ground operations or in-flight scenarios.

Ensuring that the load does not exceed the defined limit is critical for operational reliability and safety. The other options, while having higher numerical values, do not reflect the manufacturer's defined limits and thus are not acceptable for safe operation.