Practice question

What is 'light loss factor' (LLF) in roadway lighting design?

  1. The percentage of electricity wasted as heat
  2. The product of all factors that reduce the initial light output over time, including lamp lumen depreciation, luminaire dirt depreciation, ambient temperature factor, and voltage factor
  3. The cost of lost productivity during outages
  4. The percentage of light blocked by the pole

Answer: B — The product of all factors that reduce the initial light output over time, including lamp lumen depreciation, luminaire dirt depreciation, ambient temperature factor, and voltage factor

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Practice more: IMSA Roadway Lighting II Practice Questions - IMSA Roadway Lighting Technician Level II Certification Exam Exam →