FAA Powerplant Written Practice Test

What is a primary function of an Electronic Engine Control (EEC) in turbine engines?

1. Monitor the pilot's input

2. Regulate the engine's fuel flow

3. Detect engine vibrations

4. Control the cabin pressure

The correct answer is: Regulate the engine's fuel flow

The primary function of an Electronic Engine Control (EEC) in turbine engines is to regulate the engine's fuel flow. The EEC plays a critical role in managing various engine parameters to ensure optimal performance and efficiency. It continuously monitors engine conditions such as speed, temperature, and pressures, and uses this data to adjust the fuel flow to the combustion chamber accordingly. This precise regulation helps maintain the desired thrust levels while also ensuring that the engine operates within safe parameters, contributing to both performance and reliability. While other functions such as monitoring pilot inputs or detecting engine vibrations are important aspects of engine operation, they are not the main purpose of the EEC. Controlling cabin pressure, on the other hand, is entirely separate from the EEC's functions, focusing instead on providing a suitable environment for passengers and crew within the aircraft. Therefore, the emphasis placed on fuel flow regulation distinguishes the EEC's core responsibility in turbine engine functionality.