Thermography MCQ

9. What happens if emissivity is set too low? A) Temperature appears lower B) Temperature appears higher C) No effect D) Image disappears Answer: B) Temperature appears higher Explanation: Camera compensates incorrectly. 10. Reflected apparent temperature accounts for: A) Internal heat B) Ambient reflection C) Conduction loss D) Camera error Answer: B) Ambient reflection Explanation: Surroundings reflect IR into the camera. 11. Which surface is easiest to measure? A) Shiny metal B) Wet surface C) Painted surface D) Mirror Answer: C) Painted surface Explanation: High emissivity surfaces give accurate readings. 12. Infrared cameras detect: A) Visible light B) Microwave radiation C) Infrared radiation D) Sound waves Answer: C) Infrared radiation Explanation: IR cameras work beyond visible spectrum. 13. What is thermal contrast? A) Image brightness B) Temperature difference C) Pixel density D) Frame rate Answer: B) Temperature difference Explanation: Higher contrast improves defect detection. 14. Best condition for thermog…

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