NCCER Electrical Level 3 Module 3 'Practical applications of lighting'

A class of lighting that distributes 90% to 100% of the light downward is ____.

direct-indirect

Recessed luminaires are likely to be found in a ___.

ceiling

Wash-down resistant luminaires are most likely to be used in ____.

food processing plants

Following the loss of normal power, an exit luminaire must remain lit for ___. **

90 minutes

In a health care facility, luminaires mounted near the floor would be found in ___.

patient rooms

A cobra-head luminaire may be used for___.

roadway lighting

The type of dimming system that provides color changing ability and can be dimmed through the full range of illumination without flickering is a(n) ___.

LED dimming system

An office area in which the occupants sit quietly at desks is best suited for a lighting system controlled by a(n) ___.

infrared sensor

Time clocks are often used with ___.

photo sensors

HVAC equipment can be controlled by a(n) ___.

EMS (Emergency Management System)

Luminaries that distributes 40% to 60% of their emitted light downward and the balance upward, sometimes with a strong horizontal component, are classified as ___.

general diffuse luminaires

A luminaire with an IESNA Type 1 light distribution would be used for a ___.

narrow roadway

Light pollution does not interfere with ___.

crime

Ceiling luminaires equipped with diffusers are typically used to provide ____.

general diffused lighting

Industrial fluorescent luminaires with apertured reflectors typically direct which percentage of light downward toward the worksurface?

100%

NEC Article 500 governs the application and installation of ___.

Hazardous location lighting

One lumen falling on one square foot of surface produces an illumination of ___.

one footcandle

Lighting that directs well-focused illumination to a specific surface such as a kitchen counter is classified as ___.

task lighting

Two identical low-bay HID luminaires are to be mounted at a height of 18'. If these luminaires have a spacing criterion (SC) of 1.5, what is the maximum distance that should exist between them to provide proper lighting?

27'

In a school, task-oriented lighting can be found in a(n) ___.

classroom

An industrial application that allows for frequent lighting relocation is most likely to use ___.

lighting trolley busways

Bollard luminaires are commonly used to light ___.

walkways and landscapes

Two codes or standards for lighting efficiency are found in ____.

International Energy Conservation Code and ASHRAE 90.1

All of the following sensors are normally used as occupancy sensors, except a(n) ___.

sound sensor

Daylight harvesting uses an occupancy sensor along with a ___.

timing mechanism

Lighting that provides illumination over a small area or confined space without providing any significant general lighting in the local area is classified as ____ lighting.

local

DALI, DMX512, RF, and ___ can all be used for dimming luminaires.

DMX

Ture or False? Ceiling-mounted luminaires equipped with diffusers direct their light in a narrow pattern?

False: They direct their light in a wide pattern

Track lighting is normally used to provide general lighting, task lighting, and _______.

accent lighting

low-bay luminaires are generally designed for installation at mounting heights of ___ and below.

up to 20'

___ luminaries are the preferred luminaire when constructing new classrooms.

High CRI

Merchandise contained in a store display cases is frequently illuminated by ____ luminaires with a high CRI.

strip-type

To compensate for the poorer vision of older patients in extended care facilities, use adjustable task-oriented luminaires and ___ wherever possible.

indirect

True or False? Dust-proof luminaires are constructed so that dust is prevented from entering the enclosed case.

True

An outdoor roadway luminaire is designed so that almost no light is directed above 90 degrees. By IESNA classification, this luminaire is classified as a(n) ____ luminaire.

cutoff

Light that shines beyond an outdoor sports facility, possibly annoying the occupants of adjacent properties, is called ____.

light pollution or light (trespass)

True or False? Fluorescent lamps can be dimmed to zero light output.

False

A growing group of systems used to control LED drivers individually. Different technologies are used, such as Wi-Fi.

Radio Frequency(RF)

Locations in which flammable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures.

Class 1 locations

Locations that are hazardous because of the presence of combustible dust.

Class 2 locations

When photo sensors are used outdoors, the sensor should be aimed due ____.

north