ARE Study Review

In a materials reference showroom, an area of study carrels is set aside for industry professionals to review product literature and reference materials. The showroom's reference center is open from 7 am through 10 pm every day and the owners of the center would like to reduce the energy consumption and expense. Which of the following is the best choice of lighting selection for this portion of the center. A. ambient lighting B. general illumination C. task lighting D. accent lighting

The daylight factor method (CIE - E.U.) calculates how much daylight reaches any location in a room assuming overcast/diffuse conditions; and can account for corner windows, which cannot be accounted for using the lumen method (IES - U.S.). When 2,200 fc is measured on the ground outside, what is the resulting illumination level if one end of a room has a daylight factor of 2?

What do lightbulbs and rebar have in common?

Which calculation method can be used to calculate daylight at any location in a room? A. Lumen method, B. Daylight factor method

Commonly used outdoor lamps are metal halide (MH) and high pressure sodium (HPS). LEDs are also increasingly replacing them in outdoor applications, such as pedestrian path lighting. The quality of light differs among lamp types and is an important selection criteria considered with efficacy, efficiency, lamp life, and initial cost. Match the light quality with a lamp type: I. amber light II. white to bluish white light III. warm white 1. MH 2. HPS 3. LED (3000K) A. 1=I, 2=II, 3=III B. 1=III, 2=I, 3=II C. 1=II, 2=III, 3=I D. 1=II, 2=I, 3=III

The deregulation of the electric utility industry commenced with the signing of the National Energy Policy Act of 1992 (EPACT 92), which additionally set minimum efficacy standards for many PAR and R incandescent lamps, and prohibited the manufacture of certain types of fluorescent lamps. One such fluorescent lamp type that is no longer manufactured is the 40W F40T12 (CW and WW). Which of the following are available alternatives? Choose 4 A. F40T10 lamps B. 40W and 34W triphosphor F40T12 lamps (69+ CRI) C. 60W halophosphor F96T12 CW or WW D. 95W halophosphor F96T12/HO CW or WW E. F32T8 lamps (requiring a compatible ballast) F. F96T8/HO lamps (requiring a compatible ballast) G. 34W halophosphor F40T12/ES CW or WW lamps H. 75W and 60W triphosphor F96T12 (69+ CRI)

What percentage of light output is lost when a bare fluorescent lamp is exposed to a temperature of 32deg Fahrenheit (0 Celsius)? A. 10%, B. 25% C. 35%, D. 50%

Select the most correct statement for Group Replacement System A. Used in stadium installation B. Desirable for lower installation costs C. Following burnout, system is used when lamps are replaced D. Extends lamp life by operating under voltage Answer D. Extends lamp life by operating under voltage. Group replacement is an advantageous maintenance scheme for large areas of lighting with no interim relamping necessary. Individual burnouts are ignored until a critical number is reached. C. refers to spot replacement, relamping when individual lamps no longer function. ARE 4.0 exam prep: BS

A typical 60-watt standard frosted incandescent bulb outputs 890 lumens for an efficacy ratio of about 15 lumens per watt. As an A19, its shape is spherical. What is the its calculated luminance? A. 25,115 cd/in² B. 25.115 cd/ft² C. 25,115 cd/m² D. Indeterminate, missing variable. Answer If 1 candela (cd) = 4 ∏ lumens (lm), 890 x 1cd/4∏ = 71 cd, A19 = 19/8 = 2.375 in or 60mm diameter (= 30mm radius), L = intensity / projected area, 71 cd / ∏ r² = 71/ 3.14 x (.03m)² = 25,115 cd/m² ARE 4.0 exam prep: BS

Examining the daylighting potential in a project, determine from this illustration the effective depth of the room which will receive acceptable daylight illumination. A. 8'-6" B. 10'-2" C. 11'-6" D. 12'-9" Answer D. 12 ft 9 in. Take the head height above the floor times 1.5 for the effective depth of illumination. If using a light shelf, daylight could penetrate into the room a distance of 2 to 2.5 times the head height. ARE 4.0 exam prep: BS

from IAN symbol libraries (free) for Illustrator,  UMd Center for Environmental Science Select the correct order from top to bottom of the lamp type matching these color spectra: A. mercury vapor, metal halide, incandescent B. metal halide, incandescent, mercury vapor C. incandescent, mercury vapor, metal halide Answer B. metal halide (color in most regions), incandescent (color in regions toward yellow, weak at blue end), mercury vapor (bluish, poor color rendition in objects) ARE 4.0 exam prep: BS

Average lamp hours being roughly equivalent amongst the following, which has the highest lumens per watt output? A. Mercury vapor B. Fluorescent C. High-pressure sodium Answer C. High-pressure sodium (45-110), then B. Fluorescent (33-77) and then A. Mercury vapor (13-48) ARE 4.0 exam prep: SPD

This method of calculating artificial lighting is NOT typically used for office and commercial spaces and does not make use of a coefficient of utilization for each fixture type taking into account reflectances of surrounding room zones. A. point grid method B. zonal cavity method C. room cavity method D. lumen method Answer A. point grid method does not attempt to account for surface reflectivity and comparative volumes within the room. ARE 4.0 exam prep: BS

Which lighting produces a 654.72 Btu/hr heat gain? A. 4x 40 watt fluorescent bulbs B. 2 x 75 watt incandescent C. 12 x 12 watt LEDs Answer (1 watt = 3.41 Btu/hr) A. 4x40 watts x 1.2 (for ballast) x 3.41 Btu/hr ARE 4.0 exam prep: BS

What is the measure of how well light displays true color (a measure whose best possible rating is 100)? Answer Color Rendition Index (CRI) - 100 indicates that no colors of the spectrum are missing. ARE 4.0 exam prep: BS

Illuminance (illumination) = a measure of the amount of light falling (or density of luminous flux) on a surface. What is its symbol and unit value? Answer E, a unit of illuminance = the footcandle FC. ARE 4.0 exam prep: BS

What is the most efficient HID lamp in terms of expected lifetime and output in lumens per watt, but providing no color rendition (produces monochromatic yellow light)? I. Metal halide II. High pressure sodium III. Low pressure sodium IV. Mercury vapor Answer III. Low pressure sodium. It is only suitable for security lighting applications. ARE 4.0 exam prep: BS

What is the usual minimum foot candles required at floor level in exit stairs? Answer 1 foot candle (10.8 lux) is a minimum lighting level for emergency lighting. ARE 4.0 exam prep: BS

For horizontal task vision (seated, eyes downward for reading), a diffuser output emphasizing this range would minimize both direct and reflected glare discomfort: 0-45 degrees 30-60 degrees 45-85 degrees Answer 30-60degrees. Most vision of this type takes place from 20-40degrees from vertical. 0-45deg. is the reflected glare zone and 45-85deg. is the direct glare zone. ARE 4.0 exam prep: BS