Physics · Illumination Engineering
Which of the following is a major factor contributing to the 'Depreciation Factor' (or Maintenance Factor) in lighting calculations?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The color temperature change of the lamp over time
- 2The type of ballast used with the luminaire
- 3The reduction in the lamp's luminous output over its lifetime✓
- 4The age and wear of the luminaire housing
Correct answer
The reduction in the lamp's luminous output over its lifetime
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