FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

During ground operation, aircraft generator cooling is usually accomplished by

1. Forced air from the engine

2. An integral fan

3. Natural air flow

4. External cooling systems

The correct answer is: An integral fan

During ground operation, the aircraft generator needs cooling to prevent overheating. The cooling is usually accomplished by an integral fan that is designed to cool the generator while it is running. This fan is specifically built into the generator system to ensure adequate airflow and cooling during ground operation. Forced air from the engine (choice A) is not the primary method for cooling the aircraft generator during ground operation. While the engine does produce airflow, it is not typically directed specifically at the generator for cooling purposes. Natural air flow (choice C) may not provide sufficient cooling for the aircraft generator during ground operation, especially in situations where there may be limited airflow around the generator. External cooling systems (choice D) are not commonly used for cooling aircraft generators during ground operation, as the integral fan built into the generator system is usually sufficient for this purpose.