CID CID Lighting Design and Technology 2 — Questions and Answers
Question 1: Which lamp type is most energy-efficient and has the longest rated lifespan among modern lighting options?
- Incandescent
- Halogen
- Fluorescent
- LED (Correct answer)
Correct answer: LED
LED lamps are the most energy-efficient, consuming up to 80% less energy than incandescent bulbs and lasting 25 times longer.
Question 2: What term describes the phenomenon where fluorescent or LED lights rapidly switch on and off, which can cause eye strain and headaches?
- Glare
- Flicker (Correct answer)
- Diffusion
- Ghosting
Correct answer: Flicker
Flicker refers to rapid, repetitive changes in light output that can cause visual discomfort, fatigue, and headaches in occupants.
Question 3: In a residential bedroom, which color temperature (CCT) creates the most relaxing and warm atmosphere?
- 6500K
- 5000K
- 4000K
- 2700K (Correct answer)
Correct answer: 2700K
A CCT of 2700K produces warm, incandescent-like light that promotes relaxation and is ideal for residential bedrooms.
Question 4: What is the purpose of a lighting control system in commercial interior design?
- To increase wattage usage
- To automate, dim, and schedule lighting for efficiency and ambiance (Correct answer)
- To replace natural daylighting systems
- To eliminate the need for task lighting
Correct answer: To automate, dim, and schedule lighting for efficiency and ambiance
Lighting control systems allow designers to automate, dim, and schedule lighting, improving energy efficiency and supporting different activity-based lighting scenes.
Question 5: Which lighting technique uses a light source placed behind a translucent panel or architectural element to create an even glowing effect?
- Cove lighting
- Backlighting (Correct answer)
- Uplighting
- Grazing
Correct answer: Backlighting
Backlighting places a light source behind a translucent material to produce a soft, uniform glow across the surface.
Question 6: Which IES publication serves as the primary reference standard for lighting design recommendations used by interior designers in the US?
- ASHRAE 90.1
- IES Lighting Handbook (Correct answer)
- NFPA 101
- ANSI A117.1
Correct answer: IES Lighting Handbook
The IES Lighting Handbook is the authoritative reference published by the Illuminating Engineering Society for lighting design standards and recommendations.
CID CID Lighting Design and Technology 2
Which lamp type is most energy-efficient and has the longest rated lifespan among modern lighting options?