Soar to New Heights with the 2026 Commercial Pilot License (CPL) Practice Exam – Ready for Takeoff!

The main purpose of turbochargers in an aircraft engine is to compress thin air for improved combustion. As aircraft ascend, the air density decreases, leading to a reduction in engine power. Turbochargers address this issue by forcing more air into the combustion chamber, allowing for a more optimal air-fuel mixture and maintaining engine performance at higher altitudes.

By increasing the amount of air available for combustion, turbochargers enhance the engine's efficiency and power output, particularly in conditions where altitude could compromise performance. This is crucial for maintaining engine power during climbs and ensuring that the aircraft can operate effectively throughout its altitude range.

The other choices, while related to aircraft systems, do not accurately describe the function of turbochargers. For instance, increasing cabin pressure is related to pressurization systems, generating electrical power pertains to alternators or generators, and reducing weight involves structural and design considerations rather than direct engine performance enhancement.