Practice Test Geeks(CLC) Certified Lighting Consultant Practice Test
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Lighting Design & Application Flashcards

7 cards from real CLC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Lighting Design & Application flashcards as text

  1. Which lighting metric best describes the amount of light falling on a surface?

    Answer: Illuminance (footcandles or lux)

    Illuminance measures the amount of luminous flux per unit area arriving at a surface, expressed in footcandles (fc) or lux.

  2. A retail store wants to highlight merchandise with high contrast. Which technique is most appropriate?

    Answer: Accent lighting with a 3:1 to 5:1 accent-to-ambient ratio

    Accent lighting using a 3:1 to 5:1 ratio creates the focal contrast needed to draw attention to merchandise without causing glare.

  3. What is the primary purpose of a photometric plan in a lighting design project?

    Answer: To predict light levels and distribution across a space

    A photometric plan uses calculations or software to predict illuminance levels, uniformity, and distribution before installation.

  4. In museum lighting, which UV threshold is commonly recommended to protect artifacts from photochemical damage?

    Answer: 10 µW/lm

    Museum conservation standards typically call for UV levels at or below 10 µW/lm to minimize photochemical degradation of sensitive materials.

  5. Which of the following best defines 'luminaire efficiency'?

    Answer: The ratio of lumens exiting the luminaire to the total lumens produced by the lamp(s) inside

    Luminaire efficiency (or light output ratio) is the fraction of lamp lumens that actually exits the fixture after losses from optics, housing, and thermal effects.

  6. A healthcare facility corridor requires lighting that reduces fall risk for elderly patients. Which design parameter is most critical?

    Answer: Uniform horizontal illuminance with minimal shadows and glare control

    Uniform illuminance with controlled glare minimizes visual confusion and shadow hazards that increase fall risk for elderly patients.

  7. When designing daylighting integration, what does the term 'daylight autonomy' measure?

    Answer: The percentage of time a space meets its target illuminance from daylight alone

    Daylight autonomy (DA) is the percentage of occupied hours during a year when target illuminance is met by daylight without electric lighting.