FAA Powerplant Written Practice Test

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Prepare for the FAA Powerplant Written Test. Study with flashcards and multiple choice questions, each featuring hints and explanations. Ace your exam with confidence!

Practice this question and more.

The lightweight four-cylinder opposed Rotax 914 engine is known for what key feature?

High fuel efficiency
Turbocharging capabilities
Advanced fuel injection
Dual ignition for each cylinder

The correct answer is: Dual ignition for each cylinder

The Rotax 914 engine is specifically known for its dual ignition feature, which provides several advantages in terms of performance and reliability. Dual ignition means that each cylinder is equipped with two spark plugs, one served by each of two separate ignition systems. This setup enhances engine reliability because if one ignition system fails, the other can continue to operate, allowing the engine to keep running smoothly. Additionally, having dual ignitions contributes to better combustion efficiency, improved power output, and can reduce the risk of engine misfire. While the Rotax 914 may have commendable fuel efficiency, turbocharging capabilities, and advancements in fuel injection, these features are not the distinctly recognized hallmark of the engine when compared to the significant safety and reliability benefits provided by its dual ignition system.