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