Introduction to Industrial Maintenance Practice Test

Thermography in maintenance uses infrared imaging to visualize heat patterns on equipment, so you can see where heat is being generated abnormally. This helps you spot problems like misalignment, overload, poor lubrication, or electrical faults by identifying hotspots. A typical temperature anomaly indicator is a hotspot—a localized area that is significantly hotter than the surrounding parts or than the equipment’s normal operating temperature, which shows up as a bright region on the thermographic image. The other options don’t fit because measuring sound levels, analyzing oil viscosity, or recording ambient humidity aren’t based on infrared heat patterns and wouldn’t reveal these heat-related issues.