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. A lighting consultant is designing a grocery store produce section. Which CRI and CCT combination best enhances the appearance of fresh fruits and vegetables?

    Answer: CRI 90+, 3000K warm white

    High CRI (90+) at 3000K renders reds and greens with high fidelity and warmth, making produce appear vibrant and fresh to shoppers.

  2. What is 'maintained illuminance' in the context of a lighting design specification?

    Answer: The average illuminance at the end of a defined maintenance cycle, accounting for lamp depreciation and dirt accumulation

    Maintained illuminance is the target level that must still be met after accounting for lumen depreciation, dirt, and other factors over the maintenance interval.

  3. Which ASHRAE/IES standard sets maximum lighting power densities (LPD) for commercial buildings in the United States?

    Answer: ASHRAE/IES 90.1

    ASHRAE/IES Standard 90.1 (Energy Standard for Buildings) establishes maximum allowed lighting power densities in watts per square foot for various building types.

  4. A designer uses a 'wall wash' technique in a gallery. Which luminaire placement rule best achieves even vertical illuminance across the wall?

    Answer: Place fixtures at a distance from the wall roughly equal to the spacing between fixtures

    For an even wall wash, the spacing between fixtures should roughly equal their distance from the wall (1:1 ratio), providing a scallop-free, uniform wash.

  5. In a high-bay industrial application, why is it important to evaluate the luminaire's thermal management?

    Answer: Excessive heat degrades LED junction performance and accelerates lumen depreciation

    LED performance and lifespan are highly temperature-sensitive; poor thermal management raises junction temperature, accelerating lumen depreciation and reducing rated life.

  6. A client requests 'biophilic lighting design' for a corporate office. What does this approach prioritize?

    Answer: Incorporating natural light patterns, daylight variability, and nature-mimicking dynamics to support human well-being

    Biophilic lighting design integrates natural daylight, dynamic light variation, and patterns that reflect natural environments to promote occupant health and connection to nature.

  7. What is the purpose of an 'emergency egress' lighting system as required by NFPA 101 (Life Safety Code)?

    Answer: To provide a minimum average of 1 footcandle along the path of egress for safe evacuation during power failure

    NFPA 101 requires emergency egress lighting to deliver at least 1 average footcandle (with a maximum-to-minimum ratio no greater than 40:1) along egress paths for a minimum of 90 minutes during power failure.