FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

In a freon vapor cycle cooling system, cooling air for the condenser is obtained from the ambient air. The condenser is responsible for removing heat from the high-pressure, high-temperature vapor refrigerant, and transferring it to the ambient air, which helps to cool and condense the refrigerant back into a liquid state. This process allows the refrigerant to continue circulating through the system and efficiently cool the aircraft's interior.

Options A, C, and D are incorrect because engine exhaust, inside the cabin, and bleed air are not sources of cooling air for the condenser in a freon vapor cycle cooling system. Engine exhaust is hot and not suitable for cooling purposes, air inside the cabin is recirculated and not ambient air, and bleed air is typically used for pressurization and other aircraft systems, not for cooling the condenser.