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chapter 4 eeu 4.6-4.10 > chap 4.6 > Flashcards

chap 4.6 Flashcards

1
Q

Emit visible light as a result of heating;

A

INCANDESCENT LAMPS

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2
Q

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

A

Light Bulb

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3
Q

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

A

1890s, Thomas Edison

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4
Q

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

A

T

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5
Q

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

A

F

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6
Q

Incandescent Filaments can reach temperatures
between ______ and ______°F

A

4600 and 6000°F

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7
Q

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

A

red, orange, and yellow

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8
Q

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

A

Medium Base

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9
Q

Smaller threaded base used in ornamental lighting such as chandeliers.

A

Candelabra Base

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10
Q

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

A

Mogul Base

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11
Q

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

A

Long-life lamps

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12
Q

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

A

Rough service lamps

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13
Q

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

A

Plastic-coated lamps

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14
Q

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

A

Low-voltage lamps

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15
Q

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

A

TUNGSTEN-HALOGEN LAMPS

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16
Q

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

A

iodine or bromine

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17
Q

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

A

TUNGSTEN-HALOGEN LAMPS

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18
Q

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)

A

t

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19
Q

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

A

GASEOUS DISCHARGE LAMPS

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20
Q

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

A

ultraviolet

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21
Q

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

A

Ballast

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22
Q

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.

A

ballast

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23
Q

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

A

Magnetic or Iron Ballasts

24
Q

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

A

Electronic Ballasts

25
Q

type of ballast that is Extremely annoying in quite spaces.

A

Ballast noise

26
Q

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

A

Ballast factor (BF)

27
Q

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

A

FLUORESCENT LAMPS

28
Q

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

A

Cathodes

29
Q

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

A

Linear fluorescent lamps (LFL)

30
Q

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

A

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

31
Q

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

A

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

32
Q

Are miniaturized fluorescent lamps.

A

Compact Fluorescent Lamps (CFL)

33
Q

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

A

Compact Fluorescent Lamps (CFL)

34
Q

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

A

20 to 125W /
6 to 96 inches

35
Q

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

A

phosphor

36
Q

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

A

Halo

37
Q

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

A

t

38
Q

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

A

 Luminaire Efficacy Rating (LER)

39
Q

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.

A

Luminaire Efficacy Rating (LER)

40
Q

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

A

 HIGH INTENSITY DISCHARGE LAMPS

41
Q

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

A

f (higher pressure)

42
Q

Common Types of HID Lamps:

A
  1. Mercury Vapor (WV) Lamps
  2. Metal Halide (WH) Lamps
  3. High-Pressure Sodium (HPS) Lamps
  4. Low-Pressure Sodium (LPS) Lamps
43
Q

______________ lamps are the first commercially
available HID lamps.

A

Mercury Vapor Lamps

44
Q

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

A

blue-white

45
Q

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

A

Metal Halide Lamps

46
Q

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

A

Metal Halide Lamps

47
Q

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)

A

t

48
Q

_______ 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)

A

High-Pressure Sodium Lamps

49
Q

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

A

Low-Pressure Sodium Lamps

50
Q

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

A

 BLENDED LAMPS

51
Q

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

A

SOLID-STATE LIGHTING

52
Q

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

A

Light-Emitting Diodes

53
Q

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

A

f (depends on the material)

54
Q

are based on aluminum gallium arsenide (AlGaAs)

A

Red LED’s

55
Q

are from indium gallium phosphide (InGan)

A

Blue LED’s

56
Q

are from aluminum gallium phosphide (AlGap)

A

Green LED’s

57
Q

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

A

t

chapter 4 eeu 4.6-4.10 (5 decks)

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