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Introduction
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Consistency in Measurement 10 xp
- Quiz
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Lumens
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Intensity and Illumination
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Intensity Quiz 10 xp
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Efficiency and Power
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Efficiency Power Quiz 10 xp
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Beam Pattern
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Beam Pattern Quiz 10 xp
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Color
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Color Quiz 10 xp
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Scoring Systems
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Scoring Quiz 10 xp
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Final Test
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Final Test
Lumen Quiz
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1.
What is the best measurement of lumens for an LED headlight or directional light source?
2.
What is the best measurement of lumens for an LED bulb or non-directional light source?
3.
What lumen measurement is often inaccurate, because it is simply estimated from a datasheet?
4.
Why would we measure the lumen output of a product without a lens or housing installed?