FAA Powerplant Written Practice Test

Which is an indication that electrical system maintenance is required?

1. Regular operation at rated output

2. Occasional tripping of breakers

3. Unchanged performance of connectors

4. Consistent voltage readings

The correct answer is: Occasional tripping of breakers

Occasional tripping of breakers is a significant indication that electrical system maintenance is required. Breakers are designed to protect electrical circuits from overloads and faults, and if they are tripping on a regular basis, it suggests that there may be an underlying issue within the electrical system. This could range from faulty wiring, malfunctioning components, or even short circuits, all of which necessitate further investigation and maintenance. Consistent tripping can lead to operational interruptions or potentially more severe damage to the electrical system if not addressed promptly. In contrast, regular operation at rated output indicates that the system is performing as intended and thus may not need immediate maintenance. Unchanged performance of connectors suggests that there are no noticeable issues with electrical connections, which is a positive sign and not typically a prompt for maintenance. Consistent voltage readings alone also do not indicate a need for maintenance, assuming those readings are within acceptable limits, as they suggest that the electrical system is functioning correctly without fluctuations or abnormalities.