Term
| The key to energy savings with daylighting is: |
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Definition
| (b) to provide responsive and operable controls for the electric lighting system |
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Term
| 2. Daylight factor (at a point) is best described as: |
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Definition
| (c) the ratio of interior daylight illuminance to exterior daylight illuminance |
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Term
| 3. Assuming a given sky type, daylight factor (DF): |
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Definition
| (a) at a specific point is generally constant throughout the day |
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Term
| 4. The daylight within a building consists of the following components: |
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Definition
| (c) sky component, externally reflected component, internally reflected component |
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Term
| 5. Daylight factor (DF) is expressed: |
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Definition
| as a percentage or decimal value |
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Term
| 6. Bilateral daylighting requires: |
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Definition
| (c) daylight apertures on two opposite sides of a space |
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Term
| 7. An office building has multiple floors, each with an area of 900 ft2. The following building form is ideal from a daylighting standpoint: |
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Definition
| (a) an elongated, narrow plan that maximizes north and south exposure |
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Term
| 8. Splaying the walls of a sidelight aperture will: |
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Definition
| (c) reduce the potential for glare |
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Term
| 9. In the CIE Method of daylight analysis, service daylight factor is: |
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Definition
| (a) a daylight factor that relates to real-world system performance |
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Term
| 10. A heliostat is used in daylighting essentially to: |
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Definition
| (d) deliver a concentrated source of daylight |
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Term
| 11. Physical models are used in daylighting design: |
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Definition
| (b) often, they are a useful and easy to understand tool |
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Term
| 12. Which of the following statements is true? |
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Definition
| (b) physical daylight models are a quick and easy way to investigate complex daylighting phenomena |
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Term
| 13. List two factors (aside from date and location) that impact the availability of daylight. |
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Definition
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Term
| 14. Efficacy of a light source is best defined as: |
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Definition
| (a) the ratio of lumens provided to energy used |
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Term
| 15. The sky luminance pattern that is typical of a completely overcast sky is: |
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Definition
| (a) luminance L at the zenith, with luminance L/3 at the horizon |
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Term
| 16. Daylighting design for climates with lots of clear sky conditions should typically: |
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Definition
| (c) exclude contributions from direct sun to decrease glare and overheating |
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Term
| 1. Light is best described as: |
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Definition
| (a) a small portion of a continuous range (or spectrum) of electromagnetic radiation |
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Term
| 2. For some given building material, transmittance is 0.4 and reflectance is 0.4; what is the absorptance: |
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Definition
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Term
| 3. “White” light is composed of: |
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Definition
| (a) a generally even mix of light from across the visible spectrum (b) light from only the very center of the visible spectrum |
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Term
4. Match the lighting terminology below (column 1) with the parameter (column 2) it describes:
(a) luminous intensity (1) density of light falling on a surface
(b) luminous flux (2) density of light leaving a surface
(c) illuminance (3) quantity of light leaving a source
(d) luminance (4) output of a light source in some direction |
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Definition
| 4. a = 4; b = 3; c = 1; d = 2 |
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Term
| 5. The relationship between illuminance and luminance for an opaque surface is best described as: (a) Luminance and illuminance are numerically identical. |
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Definition
| (c) Luminance is illuminance as modified by reflectance. |
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Term
| 6. An illuminance meter will provide readouts in which of the following units: |
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Definition
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Term
| 7. The inverse square law states that, for a point source: |
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Definition
| (c) illuminance = (source intensity) / (distance)2 |
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Term
| 8. The primary nonpersonal factors influencing visual acuity include: |
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Definition
| (c) object size, contrast, luminance, time permitted for viewing |
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Term
| 9. The apparent brightness of an object is dependent upon which of the following (choose two): |
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Definition
(a) the adaptation level of the eye
(b) object luminance |
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Term
| 10. Illuminance levels and illuminance categories are used to: |
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Definition
| (a) establish quantitative lighting system design criteria |
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Term
| 11. Room illuminance values are typically measured: |
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Definition
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Term
| 12. Glare caused by light sources in the field of vision is known as: |
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Definition
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Term
| 13. Glare is categorized according to which of the following groupings: |
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Definition
| (c) direct glare and reflected glare |
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Term
| 14. “Veiling reflections” are primarily a problem that occurs with: |
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Definition
| (b) VDTs and specular materials |
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Term
| 15. Equivalent spherical illuminance (ESI) is primarily a measure of: |
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Definition
| (b) the quality of light falling on a task |
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Term
| 16. The “offending zone” is best described as: |
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Definition
| (a) that portion of the ceiling plane likely to cause glare problems |
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Term
| 17. All of the following terms are used to define coloration EXCEPT: |
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Definition
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Term
| 18. A light-adapted human eye (photopic vision) is most sensitive to the following wavelengths (colors): |
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Definition
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Term
| 19. Color temperature is best described as: |
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Definition
| (c) the temperature of a black body radiator that would produce light of similar color to a given light source |
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