Practice Test Geeks(CLC) Certified Lighting Consultant Practice Test
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Lighting Calculations & Software 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 Calculations & Software flashcards as text

  1. When performing an average-to-minimum uniformity ratio calculation for a roadway, which IES standard provides guidance?

    Answer: IES RP-8

    IES RP-8 (Roadway Lighting) specifies uniformity criteria including average-to-minimum and maximum-to-minimum ratios for roadway applications.

  2. What does a 'luminous intensity distribution curve' (LIDC) plotted in polar form directly show?

    Answer: Candela output in all directions around the luminaire

    A polar LIDC plots candela values at every angle around the luminaire, visually showing the shape and intensity of the light distribution.

  3. In energy code compliance calculations (ASHRAE 90.1), LPD is expressed as:

    Answer: Watts per square foot (W/ft²)

    Lighting Power Density (LPD) is the total wattage of lighting divided by the floor area, expressed as W/ft² in US energy codes.

  4. Which software tool is specifically designed for outdoor sports lighting compliance with IESNA RP-6 standards?

    Answer: AGi32 with Sports Lighting module

    AGi32 includes dedicated sports lighting calculation features that support IESNA RP-6 analysis for athletic facilities.

  5. A luminaire has a BUG rating of B2-U0-G1. What does the U0 component indicate?

    Answer: Zero uplight output, fully shielded above horizontal

    In the BUG (Backlight-Uplight-Glare) rating system, U0 means zero uplight — no light is emitted above 90°, making it fully cutoff for upward light.

  6. The Unified Glare Rating (UGR) formula includes which of the following variables?

    Answer: Background luminance, solid angle, and luminous intensity toward observer

    UGR is calculated from the background luminance, the luminous intensity of each source toward the observer, and the solid angle subtended by each source.

  7. In daylighting calculations using the Daylight Factor (DF) method, a DF of 5% is generally considered:

    Answer: Well-daylit, potentially requiring glare control

    A Daylight Factor of 5% or higher indicates a well-daylit space where glare and overheating may become concerns alongside the daylight benefit.