Lights and Architectural Lighting Systems (PART 2)

Question 1

provides uniform illumination throughout the space. It softens shadows on people’s faces and provides the illumination for color and texture.

Answer 1

Ambient lighting/general lighting

Question 2

is the illumination provided for a specific visual function, which is additional to and controlled
separately from the ambient lighting.

Answer 2

Task or local lighting

Question 3

is directional lighting used to emphasize a particular object or area.

Answer 3

Accent lighting

Question 4

is the light source that adds a quality of interest to the space.

Answer 4

Decorative lighting

Question 5

is required in the critical care and emergency spaces found in hospitals, nursing homes, and police, fire protection, and crisis management areas.

Answer 5

Emergency lighting

Question 6

is the part of emergency lighting system that ensures the safety of people involved in a potentially hazardous process.

Answer 6

Safety lighting

Question 7

is part of the emergency lighting system. It enables normal activities to continue substantially unchanged.

Answer 7

Stand-by lighting

Question 8

provides illumination to ensure that an escape route can be effectively identified and used in the case
of failure of the normal lighting system.

Answer 8

Escape lighting

Question 9

is the part of the escape lighting system that includes illuminated signage used to provide clear directions
for an emergency exit of building occupants.

Answer 9

Exit lighting

Question 10

is a luminaire that is hung with a cord, chain, or tube that enables it to be suspended from a ceiling or other
support. It broadcasts light over the entire space.

Answer 10

Pendent

Question 11

is a luminaire where a shielded light source directs its light to the ceiling, where it is reflected back to the space.

Answer 11

Uplight

Question 12

is a luminaire that is usually attached to or recessed in the ceiling and emits a concentrated light downward

Answer 12

Downlight

Question 13

is a type of downlight that is a recessed, canister-shaped luminaire with a shielded lamp that emits light downward.

Answer 13

High Hat

Question 14

______ luminaires are mounted above the ceiling or behind a wall or other surface so that any visible projection of light is insignificant.

Answer 14

Recessed

Question 15

are decorative, wall-mounted luminaires that provide ambient illumination. They can direct light upward, downward, or in all directions.

Answer 15

Sconces

Question 16

_________ luminaires are used in high-ceiling areas, 20 ft (6 m) or higher, that require uniform illumination.

Answer 16

High Bay

Question 17

________ luminaires are more compact. They are designed for use in low- to medium-ceiling areas, 12 to
20 ft (3 to 6 m).

Answer 17

Low Bay

Question 18

is illumination where light received at the work plane or light illuminating an object is incident predominantly from a particular direction.

Answer 18

Directional lighting

Question 19

is a luminaire that is designed to emit an intense, concentrated beam of light with usually no more than a 20°divergence (spread) from where it is directed

Answer 19

Spotlight

Question 20

is a luminaire that emits an intense light that is broader than a spotlight and that is capable of being pointed in any direction.

Answer 20

Floodlight

Question 21

is a directional lighting installation where luminaires are attached to and are moveable along a metal track.

Answer 21

Track lighting

Question 22

is a lighting installation in which the light on the
working plane or on an object is not incident predominantly from a particular direction.

Answer 22

Diffused lighting

Question 23

is a lighting component such as a translucent glass refractor that redirects or scatters the light from a source.

Answer 23

Diffuser

Question 24

is a lighting installation where the light source is shielded by a panel that is parallel to the wall and attached to the ceiling; it distributes light over the wall.

Answer 24

Cornice lighting

Question 25

is an up-lighting installation where the light source is shielded by a ledge or recess with light dispersed over the ceiling and upper wall

Answer 25

Cove lighting

Question 26

is a lighting installation where the light source is shielded by a panel that is parallel to the wall at the top of a window

Answer 26

Valance lighting

Question 27

is a linear luminaire constructed of an inverted
metal trough that serves as a fixture for fluorescent
lighting lamps

Answer 27

Troffer

Question 28

is an incandescent lamp with an elliptically shaped reflector.

Answer 28

Elliptical reflector (ER) lamp

Question 29

It may use an incandescent filament, a halogen filament tube, or HID arc tube, is a precision pressed-glass reflector lamp.

Answer 29

Parabolic aluminized reflector (PAR) lamp

Question 30

is an advanced lighting technology that transports light from a single source over a distance to one or more light outlets or emits light evenly along the way.

Answer 30

Remote-source lighting (RSL)

Question 31

Remote-source lighting (RSL) is distributed with either (1)____________ and (2)_____________.

Answer 31

• Fiber optic RSL systems
• Light pipe RSL systems

Question 32

is excessive brightness in the field of vision that causes
discomfort or, in extreme cases, produces a disability from a temporary loss of vision.

Answer 32

Glare

Question 33

is a rating of a lighting installation expressed as a percentage of individuals who, when viewing from a specified location and in a specified direction, will be expected to find it acceptable in terms of discomfort
glare

Answer 33

Visual comfort probability (VCP)

Question 34

__________ are typically made from clear UV-stabilized plastics.

Answer 34

Lenses

Question 35

__________ are slats in a light fixture that create openings for emitting light.

Answer 35

Louvers

Question 36

__________ are opaque or translucent elements that shield a light source from direct view

Answer 36

Baffles

Question 37

is the currently accepted method for calculating average illuminance levels for indoor areas unless the light distribution is extremely asymmetric.

Answer 37

Zonal cavity method

Question 38

What are the basic steps any calculation of illuminance level

Answer 38

1. Determine cavity ratio (CR)
2. Determine effective cavity reflectances
3. Select coefficient of utilization
4. Compute average illuminance level

Question 39

is the product of all considered factors that contribute to a lighting installation’s reduced light output over a period of time.

Answer 39

Light loss factor (LLF)

Question 40

is the quantity of lamps found in the specified or existing luminaire.

Answer 40

Number of lamps in luminaire (n)

Question 41

is the minimum required or the given number of luminaires in the space

Answer 41

Number of luminaires (#)

Question 42

is the ratio of the amount of light (lumens) illuminating the work plane to the output of the lamp(s) in a fixture.

Answer 42

Coefficient of utilization (CU)

Question 43

is a number indicating cavity proportions from length, width, and height

Answer 43

Cavity ratio (CR)

Question 44

___________ ratio is an approximate maximum spacing-to-mounting height ratio required to ensure uniform
illumination on the work plane

Answer 44

Spacing criterion (CS)

Question 45

__________ of a lighting installation is the power consumed for illumination (W) divided by the area served by the lighting installation. It is expressed in W/sq.ft or W/sq.m

Answer 45

Unit power density (UPD)