When measuring vibration, an engineer should be concerned with recording the velocity or displacement of the measurement. Which other factor should also be of concern?

Correct Answer: Option B — Frequency

Vibration analysis requires monitoring frequency to identify the source of the disturbance. While amplitude indicates the severity of the vibration, the frequency identifies the specific component or mechanical fault causing the issue. Correlating frequency to rotational speed is essential for accurate diagnostic troubleshooting of rotating machinery.