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Distributed Generation > Lighting 2 > Flashcards

Lighting 2 Flashcards

1
Q

When doing a lighting survey of the client’s existing system, footcandle measurements need to be made on both horizontal and vertical surfaces.

True

False

A

True

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2
Q

The simplest form of retrofit is to ? .
Select one:

a.
upgrade the controls

b.
upgrade the fixtures

c.
upgrade the lamps

d.
all of the above

A

C

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3
Q

? buildings attempt to minimize the negative impact on the surrounding environment, including the nighttime sky.
Select one:

a.
Code compliant

b.
Commercial

c.
Sustainable

d.
All of the above

A

C

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4
Q

A device for starting and regulating fluorescent and high intensity discharge (HID) lamps is called a(n) ? .
Select one:

a.
autotransformer ballast

b.
ballast

c.
core-and-coil ballast

d.
preheat ballast

A

B

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5
Q

? is the lamp light output (lumens) measured at 40% of rated lamp life for fluorescent, compact fluorescent, and metal halide lamps and 50% of rated life for mercury and HPS lamps.
Select one:

a.
Footcandle

b.
Initial lumen

c.
Lumens/Watt (lpw)

d.
Mean lumens

A

D

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6
Q

? is the decrease in lumen output of a light source over time.
Select one:

a.
Initial lumen

b.
Lumen depreciation

c.
Lumen/Watt (lpw)

d.
Mean lumen

A

B

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7
Q

? is a measure of how well a lamp maintains its lamp output as it ages.
Select one:

a.
Design lumen

b.
Initial lumen

c.
Lumen depreciation

d.
Mean lumen

A

C

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8
Q

An electronic ballast that provides precise heating of the lamp filaments and tightly controls the pre-heat duration before applying starting voltage to ignite the lamp is called a(n) ? .
Select one:

a.
Autotransformer ballast

b.
Core-and-coil ballast

c.
Preheat ballast

d.
Programmed start ballast

A

D

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9
Q

What type of fluorescent lamp requires filament heating before igniting and producing light?
Select one:

a.
Instant start lamp

b.
Probe start lamp

c.
Pulse start lamp

d.
Rapid start lamp

A

D

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10
Q

The operation of a(n) ? relies upon an electrical arc passing between two electrodes, one on each end of the lamp. This arc passes through a glass tube coated with phosphor in a mixture of vaporized mercury and purified gases—mainly Argon or Krypton. The resulting ultraviolet waves react with the phosphor to produce a glow (fluorescence) and emit visible light.
Select one:

a.
fluorescent lamp

b.
high-intensity discharge lamp

c.
incandescent lamp

d.
light-emitting diode lamp

A

A

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11
Q

? lumens tell you the amount of light that the lamp produces after it has operated for approximately 40% of its rated life.
Select one:

a.
Average

b.
Design

c.
Running

d.
Startup

A

B

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12
Q

Lamp lumen depreciation refers to the light output from a fluorescent lamp that diminishes as the lamp is used.
Select one:
True
False

A

True

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13
Q

The ? is determined by taking the ratio of light output from a lamp operated on a commercial ballast to the light output of that same lamp operated on a “reference ballast“ as specified by ANSI standards.
Select one:

a.
ballast factor

b.
lamp current crest factor

c.
lumen factor

d.
luminance factor

A

A

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14
Q

What type of electronic ballast should be used when frequent switching applications are required (as in use with occupancy sensors)?
Select one:

a.
Autotransformer ballast

b.
Core-and-coil ballast

c.
Preheat ballast

d.
Programmed start ballast

A

D

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15
Q

? is the measure of light output of an HID lamp operated by a commercial ballast as compared to the light output of a lamp operated by a laboratory standard reference ballast.
Select one:

a.
Ballast factor

b.
Mean lumens

c.
Power factor corrected ballast

d.
Striation

A

A

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16
Q

The most common applications of the ? ballast are billboard and road sign lighting.
Select one:

a.
outdoor weatherproof

b.
preheat

c.
programmed start

d.
rapid start

A

A

17
Q

The F-Can ballast is listed for indoor use, primarily to minimize inherent ballast noise.
Select one:
True
False

A

True

18
Q

Lantern-type fixtures mounted on slender poles often require ? ballasts that fit into the poles.
Select one:

a.
indoor enclosed

b.
encapsulated core and coil

c.
outdoor weatherproof

d.
postline

A

D

19
Q

Which ballast circuit provides the best lamp wattage regulation, but carries an increase in ballast size, ballast losses, and price?
Select one:

a.
Constant wattage isolated

b.
High reactance autotransformer

c.
Reactor

d.
Regulated lag

A

D

20
Q

One of the most important characteristics of each particular ballast circuit is the degree to which it controls the lamp ? and, subsequently, the light output when the input line voltage changes.
Select one:

a.
current

b.
resistance

c.
voltage

d.
wattage

A

D

21
Q

Lamp manufacturers recommend ? electronic ballasts to drive the new generation of ceramic metal halide lamps.
Select one:

a.
high frequency

b.
high resistance

c.
low frequency

d.
low resistance

A

C

22
Q

Lamp manufacturers recommend ? electronic ballasts to drive the new generation of ceramic metal halide lamps.
Select one:

a.
high frequency

b.
high resistance

c.
low frequency

d.
low resistance

A

C

23
Q

Which of the following is NOT a basic type of LED?
Select one:

a.
Indicator-type LEDs

b.
Illuminator-type LEDs

c.
Illustrator-type LEDs

d.
None of the above

A

C

24
Q

The RGB color model is a subtractive color model, which applies to light emitted directly from an illuminant.

Select one:
True
False

A

False

25
Q

IES LM-80-08 is the approved method for measuring lumen maintenance of LED lighting fixtures.
Select one:
True
False

A

True

26
Q

Usually, the goal of ? is to provide enough light for basic visual recognition and for moving around in a space.
Select one:

a.
ambient lighting

b.
downlighting

c.
task lighting

d.
uplighting

A

A

27
Q

White-light cove fixtures are used primarily for ? , which is indirect lighting that illuminates the ceiling or the upper portions of the walls.
Select one:

a.
ambient lighting

b.
sconce lighting

c.
task lighting

d.
uplighting

A

D

28
Q

LED-based cove lighting fixtures are particularly well suited for both uplighting and ? .
Select one:

a.
ambient lighting

b.
effect lighting

c.
sconce lighting

d.
task lighting

A

B

29
Q

? fixtures are for looking at, not for illuminating objects or spaces.
Select one:

a.
Accent

b.
Cove

c.
Direct-view

d.
Wall sconces

A

C

Distributed Generation (23 decks)

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