chap 4.6

Question 1

Emit visible light as a result of heating;

Answer 1

INCANDESCENT LAMPS

Question 2

Incandescent lamp is also known as “__________” by the lay consumer.

Answer 2

Light Bulb

Question 3

In _______, ______________ introduced a commercially successful lamp and the basic
design of incandescent lamp remained unchanged.

Answer 3

1890s, Thomas Edison

Question 4

The hotter the filament, the more efficient the lamp is in converting electricity into light
and the whiter the light (t or f)

Answer 4

T

Question 5

colder operation, reduce lamp life, as a result incandescent lamp of the same wattage
can have different output and rated lives (t or f)

Answer 5

F

Question 6

Incandescent Filaments can reach temperatures
between ______ and ______°F

Answer 6

4600 and 6000°F

Question 7

electromagnetic radiation from filament
includes a significant amount of visible light,
mainly in ___, ________, and ______
wavelengths

Answer 7

red, orange, and yellow

Question 8

Familiar threaded base found with ordinary lamp up to 300 W.

Answer 8

Medium Base

Question 9

Smaller threaded base used in ornamental lighting such as chandeliers.

Answer 9

Candelabra Base

Question 10

Larger threaded base found on lamps that are 300 W or greater.

Answer 10

Mogul Base

Question 11

Used in applications where the difficulty or cost of changing lamps is
prohibitive.

Answer 11

Long-life lamps

Question 12

Special version of standard lamps that are helpful for rough or vibration
service.

Answer 12

Rough service lamps

Question 13

Not unbreakable but they break less frequently and when they break,
the shattered glass contained within the plastic coating.

Answer 13

Plastic-coated lamps

Question 14

Used in decorative and accent lighting applications that require good
control or highlighting.

Answer 14

Low-voltage lamps

Question 15

Frequently called halogen lamps, a smaller, brighter, and more
expensive version. Of incandescent lamp.

Answer 15

TUNGSTEN-HALOGEN LAMPS

Question 16

TUNGSTEN-HALOGEN LAMPS Contain high-pressure halogen gases such as _______ or ________

Answer 16

iodine or bromine

Question 17

Generate intense heat and require adequate clearance and good ventilation for heat
dissipation.

Answer 17

TUNGSTEN-HALOGEN LAMPS

Question 18

tungsten-halogen lamps cannot be touched by hand without depositing residual skin oils that substantially
reduce the life of the quartz glass bulb. (t or F)

Answer 18

t

Question 19

It produces continuous light by passing electricity through a gas contained within the
lamp.

Answer 19

GASEOUS DISCHARGE LAMPS

Question 20

GASEOUS DISCHARGE LAMPS Produce ________ radiation that causes a phosphor coating on the inside of
the lamp to glow.

Answer 20

ultraviolet

Question 21

An additional device that is required in all gaseous discharge lamps.

Answer 21

Ballast

Question 22

A voltage transformer and current-limiting device designed to start properly control the
flow of power to discharge light sources such as fluorescent and HID lamps.

Answer 22

ballast

Question 23

type of ballast that has Increase and control voltage, heavy noise.

Answer 23

Magnetic or Iron Ballasts

Question 24

type of ballast that Use solid-state electronic components, less noise and capable of
dimming lamp (lumen) output.

Answer 24

Electronic Ballasts

Question 25

type of ballast that is Extremely annoying in quite spaces.

Answer 25

Ballast noise

Question 26

Is calculated by dividing the lumen output of a lamp ballast combination by the lumen output of the same lamp on a reference ballast.

Answer 26

Ballast factor (BF)

Question 27

Is composed of a tubular glass bulb that is covered with a thin phosphor coating on its inside surface.

Answer 27

FLUORESCENT LAMPS

Question 28

________ are filament-like coils at the end(s) of the bulb that act as terminals for the electric circuit.

Answer 28

Cathodes

Question 29

Are commercially available fluorescent lamp in straight, Ushaped of circular tubes in a variety of sizes, wattages, voltages, colors, and types of base.

Answer 29

Linear fluorescent lamps (LFL)

Question 30

Offer higher light (lumen) output in comparison to standard output fluorescent lamp.

Answer 30

High Output (HO) and Very High Output (VHO) Fluorescent Lamp

Question 31

Used in re-lamping applications where improved light levels are required such as warehouse, factories, and school gymnasiums.

Answer 31

High Output (HO) and Very High Output (VHO) Fluorescent Lamp

Question 32

Are miniaturized fluorescent lamps.

Answer 32

Compact Fluorescent Lamps (CFL)

Question 33

Manufactured with integral ballast and a standard screw base that can be installed in a standard light fixture in place of incandescent lamps.

Answer 33

Compact Fluorescent Lamps (CFL)

Question 34

Fluorescent lamps are available in wattages of between __ to ___ W and lengths of __ to __ inches

Answer 34

20 to 125W / 6 to 96 inches

Question 35

The ________ blend in a fluorescent lamp determines the color temperature and color rendering of the light emitted by the lamp.

Answer 35

phosphor

Question 36

_____ phosphors are the most popular, least expensive, and lowest quality phosphors.

Answer 36

Halo

Question 37

All fluorescent lamps are designed to operate at a specific air temperature, usually a surrounding air temperature of F (25°C). (t or f)

Answer 37

t

Question 38

Is the ratio of light (the luminous flux, in lumens) emitted by a fluorescent luminaire to the electrical energy consumed, including the ballast

Answer 38

 Luminaire Efficacy Rating (LER)

Question 39

It rates the effectiveness of like luminaires in a manner similar to the EPA miles/gallon rating for automobiles. It is a good measure of the efficiency of similar fluorescent luminaires.

Answer 39

Luminaire Efficacy Rating (LER)

Question 40

Also called as HID lamps, Produce a very bright light by discharging an arc

Answer 40

 HIGH INTENSITY DISCHARGE LAMPS

Question 41

HID lamps’ gas is under lower pressure compared to fluorescent lamps. (t or F)

Answer 41

f (higher pressure)

Question 42

Common Types of HID Lamps:

Answer 42

1. Mercury Vapor (WV) Lamps 2. Metal Halide (WH) Lamps 3. High-Pressure Sodium (HPS) Lamps 4. Low-Pressure Sodium (LPS) Lamps

Question 43

______________ lamps are the first commercially available HID lamps.

Answer 43

Mercury Vapor Lamps

Question 44

High pressure MV lamps. Without color correction produce a _______ light directly from their discharge arc.

Answer 44

blue-white

Question 45

are constructed similar to MV lamps except that it has various metal halides added to mercury and argon in the glass fill

Answer 45

Metal Halide Lamps

Question 46

These produce high levels of UV radiation that must be shielded by glass in the lamp or fixture.

Answer 46

Metal Halide Lamps

Question 47

in MH lamps. No phosphor is needed to produce a cool white color, but some may be added to improve rendering of oranges and reds. (t or f)

Answer 47

t

Question 48

_______ lamps contain an internal arc tube made of a translucent ceramic material rather than quartz glass because of the high temperature (2350 °F/1300 °C)

Answer 48

High-Pressure Sodium Lamps

Question 49

These lamps are constructed of a large sodiumresistant glass tube containing sodium and a neon argon gas mixture.

Answer 49

Low-Pressure Sodium Lamps

Question 50

these lamps Combine the luminous efficiency of an HID lamp with the good color rendering capability of an incandescent lamp.

Answer 50

 BLENDED LAMPS

Question 51

refers to a type of lighting that uses light-emitting diodes (LEDs), organic light-emitting diode lights (OLEDs), or polymer light-emitting diodes (PLEDs)

Answer 51

SOLID-STATE LIGHTING

Question 52

Semiconductor that consists of a chip of semiconducting material treated to create a structure with two electron- charged electrons.

Answer 52

Light-Emitting Diodes

Question 53

The specific wavelength or color emitted by an LED does not depends on the materials used to make the diode. (t or f)

Answer 53

f (depends on the material)

Question 54

are based on aluminum gallium arsenide (AlGaAs)

Answer 54

Red LED's

Question 55

are from indium gallium phosphide (InGan)

Answer 55

Blue LED’s

Question 56

are from aluminum gallium phosphide (AlGap)

Answer 56

Green LED’s

Question 57

Fluorescent and HID lamps have some mercury content. (t or f)

Answer 57

t