FAA Powerplant Written Practice Test

What does a "course grained" characteristic in breaker points indicate?

1. Normal operation of the system

2. Potential capacitor failure

3. Higher voltage output

4. System is properly calibrated

The correct answer is: Potential capacitor failure

A "course grained" characteristic in breaker points typically signifies that there is an irregularity in the material or wear patterns, which can lead to issues with electrical conductivity and efficiency. This is often indicative of a potential capacitor failure within the ignition system. When the breaker points are not functioning correctly due to this irregularity, it can prevent the proper flow of current, leading to inconsistent spark generation and problematic engine performance. In essence, this condition warrants further inspection of the associated components, particularly capacitors, to ensure that the ignition system can operate effectively. Maintaining the integrity of the ignition components is crucial for optimal engine performance and reliability.