Lighting Final Exam
Color rendering Index ranges from_____ to_____
0 to 100
How many RGB(3 colors) lights can you control in a single DMX 512 universe?
170
You have a single-phase electrical curcuit that has a sum total of 1800 watts and an amperage of 7.5; what is the voltage? what would be the amperages be if the voltage is 120 Volts?
240 Volts- 15.0 Amps
The visible light spectrum ranges from about ______nm to _____nm
300-700
The CIE states that there are_______ luminaire light distributions
6
What is Charette?
A form of brainstorming that involves professionals and other people involved with a project. The compressed process is an interdisciplinary and collaboratives activity that combines brainstorming with immediate feedback loops
General lighting
Also known as ambient lighting, it provides overall illumination in a space, including lighting that allows people to navigate an area safely
Commissioning
An extensive process that is conducted to ensure that energy building systems perform according to specifications
CRI stands for
Color Rendering Index
What is the degree of warmness or coolness of a light source, measured in kelvins?
Correlated Color Temperature (CCT)
Which dimming systems is an addressable communication interface for lighting system?
DALI
_________ Are devices that can change the brightness of the lights by changing the voltage waveform
Dimmers
EIA stands for
Energy Information Administration
What phase is used to determine user satisfaction with the lighting design?
Evaluation (post occupancy evaluation)
illuminance is measured in
Footcandles or Lux
What are the three main categories of light?
General, task, and accent light
_______ is the level of light falls on a surface
Illuminance
Color Temperature
Indicates the degree of red or blue in the light
What elements can reduce glare fir a luminaire?
Lens Baffle and lover Shade
Who is responsible for educating their clients in sustainable lighting?
Lighting designers and Interior designers
Which space does not need IP rated fixture
Living room
________ is the amount of light emitting from a light source.
Lumen
What are the goals in specifying the lighting systems for a sustainable design?
Minimize energy consumption Reduce light pollution and light trespass Eliminate toxic substances and recycle-lamps
0-10V dimming works by varying the DC voltage supplied to the LEDs between zero volts______ and 10 volts_____
OFF- 100% brightness
______ detect illumination levels and adjusting the lights to a specific brightness
Photosensors
What is the eye vision process path?
Pupil, lense, cornea, retina
what color is lowest on the color temerature spectrum and what color is the highest?
Red is the lowest and blue is the highest
Our Circadian Rhythms disruption can affect...
Sleep loss, depression and anxiety
What is not included in a physical assessment of the programming phase?
Surveys and post occupancy report
Semi-recessed luminaries are installed part in the ceiling and part outside of the ceiling
True
Lumen (lm)
Unit for measuring the quantity of light emitted by a light source
What is layered lighting?
an illumination plan that includes natural light and multiple electrical light sources
Color tunable lighting is...
changing the color of light from red to blue.
white tunable lighting is.....
changing the color temperature from cool to warm
Natural light
direct light from the sun and stars
An occupancy sensor detects movement in several different ways. Two of those ways are thru.....
infrared and sonic detection
Task lighting
lighting that is specified for each task that is performed in a space
Decorative lighting
ornamental and should not be included in the three categories. It includes light sources that provide illumination and are art pieces themselves
Indirect natural light
result of reflection from clouds, structures, and the landscape
Melatonin starts and stops producing around what time?
starts around 9pm and stops around 7:30am
Brightness is the result of...
the interaction between an illumination level and the amount of light reflected off various surfaces
reflectance
the ratio of incident light to the light reflected from a surface or material
KNX device can control lighting, blinds, HVAC, energy management, audio/video, displays, remote controls etc
true
Accent lighting
used to create interest and highlight special features such as architectural details, artwork, plant foliage, or decorative accessories
The measure of a persons ability to distinguish fine and sharp detail is called______ and seen within____ of field of vision
visual acuity- 2 degrees
A main issue with transformers is
voltage drop
When does adaptation occur?
when the pupil opens and closes while going from a bright to dark environment and from a dark to bright environment
