What is the primary function of bearings in an engine?

• A. Support the compressor and turbine rotors
• B. Control engine temperature
• C. Increase fuel efficiency
• D. Improve aerodynamics

Answer: (A)

The primary function of bearings in an engine is to support the compressor and turbine rotors. Bearings play a crucial role in enabling rotor components to rotate smoothly while minimizing friction and wear. They provide the necessary support to ensure that these moving parts maintain proper alignment, which is essential for engine performance and longevity. By securely holding the rotors in place, bearings allow for efficient rotation, which is key to the engine’s operation.

While controlling engine temperature, increasing fuel efficiency, and improving aerodynamics are important aspects of engine design and performance, they are not direct functions of bearings. Bearings primarily focus on reducing friction and supporting rotating parts, which indirectly contributes to the overall efficiency and functioning of the engine, but their main role is centered around support.