___ is scheduled at regular intervals.

___ is scheduled at regular intervals.

• A. Infrared imaging
• B. Vibration analysis
• C. Predictive maintenance
• D. Preventive maintenance

Answer: (D)

The concept being tested is how maintenance is planned. Preventive maintenance is a proactive approach where service is performed at regular, scheduled intervals (based on time or usage) to prevent failures before they happen. This keeps equipment operating reliably and reduces unexpected downtime. In contrast, predictive maintenance relies on monitoring a machine’s condition and performing maintenance when data indicate a need, rather than on a fixed calendar. Techniques like infrared imaging and vibration analysis are tools used to assess health and predict when maintenance should occur, not the schedule itself. Therefore, scheduling at regular intervals describes preventive maintenance.

The concept being tested is how maintenance is planned. Preventive maintenance is a proactive approach where service is performed at regular, scheduled intervals (based on time or usage) to prevent failures before they happen. This keeps equipment operating reliably and reduces unexpected downtime.

In contrast, predictive maintenance relies on monitoring a machine’s condition and performing maintenance when data indicate a need, rather than on a fixed calendar. Techniques like infrared imaging and vibration analysis are tools used to assess health and predict when maintenance should occur, not the schedule itself. Therefore, scheduling at regular intervals describes preventive maintenance.