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ID REVIEW for Boards > CONS - Electricity, Lighting > Flashcards

CONS - Electricity, Lighting Flashcards

1
Q

the science dealing with the physical phenomena arising from the existence and interaction of electric charges

A

Electricity

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2
Q

a combination of two or more electric cells capable of storing and supplying direct current by electro-chemical means

A

Battery

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3
Q

a machine that converts mechanical energy into electrical energy

A

Generator

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4
Q

an electric current that reverses direction at regularly recurring intervals, having a magnitude that varies in a sinusoidal manner

A

Alternators (AC)

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5
Q

an electric current flowing in one direction only and having a magnitude that does not vary or varies only slightly

A

Direct Current Generators (DC)

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6
Q

the supply of utilities, such as water, gas, and electricity, required or demanded by the public

A

Service

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7
Q

an auxiliary power station where electrical current is converted, as from DC to AC, or where voltage is stepped up or down

A

Substation

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8
Q

the overhead portion of service conductors extending from the nearest utility pole to a building

A

Service Drop

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9
Q

the underground portion of service conductors extending from a main power line or transformer to a building

A

Service Lateral

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10
Q

the portion of a service conductor extending from a service drop or service lateral to the service equipment of a building

A

Service Entrance Conductor

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11
Q

a meter for measuring and recording the quantity of electric power consumed with respect to time

A

Watt-Hour Meter

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12
Q

a fire-rated room housing a transformer and auxiliary equipment for a large building, usually located on grade below ground and ventilated directly to the outside air

A

Transformer Vault

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13
Q

an electric device consisting of two or more windings wound on the same core, which employs the principle of mutual induction to convert variations of alternating current

A

Transformer

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14
Q

a board which are mounted the switches, fuses, and circuit breakers for controlling and protecting a number of similar branch circuits, installed in a cabinet and accessible from the front only

A

Panel/Panelboard

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15
Q

a switch that automatically interrupts an electric circuit to prevent excess current from damaging apparatus in the circuit or from causing a fire

A

Circuit Breaker

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16
Q

a device containing a strip or wire of fusible metal that melts under the heat produced by excess current, thereby interrupting the circuit

A

Fuse

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17
Q

a conducting connection between an electric circuit or device and the earth or other point of zero potential

A

Ground

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18
Q

any of several conduction rods installed at the top of a structure and grounded to divert lightning away from the structure

A

Lightning Rod

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19
Q

a panel for distributing power to other panels or to motors and other heavy power-consuming loads

A

Distribution Panel

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20
Q

a complete conducting path of an electric current, including the source of electric energy

A

Circuit

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21
Q

a type of circuit wherein an arrangement of components in an electric circuit in which the same current flows through each component in turn without branching

A

Series

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22
Q

a type of circuit where an arrangement of components in an electric circuit in which all positive terminals are connected to one conductor, and all negative terminals are connected to a second conductor

A

Parallel

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23
Q

a substance, body, or device that conducts heat, sound, or electricity

A

Conductor

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24
Q

a pliable metallic strand or a twisted or woven assembly of such strands, often insulated with a dielectric material and used as a conductor of electricity

A

Wire

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25
Q

a single insulated conductor or a bound or sheathed combination of conductors insulated from one another

A

Cable

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26
Q

a heavy conductor, usually in the form of a solid copper bar, used for collecting, carrying, and distributing large electric currents

A

Bus Bars

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27
Q

electric cable consisting of two or more insulated conductors protected by a flexible, helically wound metal wrapping

A

Armored Cable/BX Cable

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28
Q

electric cable consisting of a tubular copper sheath containing one or more conductors embedded in a highly compressed, insulating refractory material

A

Mineral-Insulated Cable

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29
Q

electric cable consisting of two or more insulated conductors enclosed in a nonmetallic, moisture-resistant, flame-retardant sheath

A

Nonmetallic Sheathed Cable

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30
Q

electric cable for transmitting high-frequency telephone, digital, or television signals consisting of an insulated conducting tube enclosing an insulated conducting core

A

Coaxial Cable

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31
Q

electric cable enclosed within a metallic sheath in order to reduce the effects of external electric or magnetic fields

A

Shielded Cable

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32
Q

the material that is a poor conductor of electricity; used for separating or supporting conductors to prevent the undesired flow of current

A

Insulator

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33
Q

the maximum operating temperature that its insulation can stand continuously

A

Conductor Ampacity

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34
Q

a tube, pipe, or duct for enclosing and protecting electric wires or cables; raceways use to enclose wires and cables and are of metal or plastic

A

Conduit

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35
Q

a channel expressly designed to hold and protect electric wires and cables

A

Raceway

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36
Q

a point on a wiring system at which current is taken to supply an electric device or apparatus; refers to the entire box assembly

A

Outlet

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37
Q

a female fitting connected to a power supply and equipped to receive a plug; aka “socket”

A

Receptacle

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38
Q

an outlet usually mounted on a wall and housing one or more receptacles for portable lamps or appliances

A

Convenience Outlet

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39
Q

a junction box designed to facilitate connecting an electric device or receptacle to a wiring system

A

Outlet Box

40
Q

an outlet intended for direct connection to a lamp holder, lighting fixture, or pendant cord terminating in a lamp holder

A

Lighting Outlet

41
Q

an outlet where one or more receptacles are installed

A

Receptacle Outlet

42
Q

a device for making, breaking, or directing an electric current

A

Switch

43
Q

a protective plate surrounding an electric outlet or light switch

A

Faceplate

44
Q

are single-pole or double-pole switches for the general purpose use of connecting or cutting-off circuits for the control of lamps or other loads from a single point

A

General Purpose Switches

45
Q

a single-pole, double-throw switch used in conjunction with another to control lights from 2 locations

A

3-Way Switch

46
Q

a switch used in conjunction with two three-way switches to control lights from 3 locations

A

4-Way Switch

47
Q

a rheostat or similar device for regulating the intensity of an electric light without appreciably affecting spatial distribution

A

Dimmer Switch

48
Q

a flexible, insulated conductor for electrically connecting an apparatus to another or to a circuit

A

Lead

49
Q

a small, flexible, insulated cable fitted with a plug to connect a portable lamp or appliance to a receptacle

A

Cord

50
Q

a male fitting for making an electrical connection to a circuit by insertion in a receptacle

A

Plug

51
Q

a switch which the interruption of a circuit occurs in air

A

Air Switch

52
Q

a form of air switch in which a hinged copper blade is placed between 2 contact clips

A

Knife Switch

53
Q

a switch controlled by a conductor floating in a liquid

A

Float Switch

54
Q

an especially quiet switch that opens and closes an electric circuit by shifting a sealed glass tube of mercury so as to uncover or cover the contacts

A

Mercury Switch

55
Q

a switch operated only by inserting a key or a card; aka “card switch”

A

Key Switch

56
Q

a sealed glass containing a filament connected at its ends to the contact area

A

Filament Lamps

57
Q

any of various devices for producing light or head, as by electricity or gas

A

Lamp

58
Q

the glass housing of an incandescent lamp is filled with an inert gas mixture, usually argon, and nitrogen, to retard the evaporation of the filament

A

Bulb

59
Q

a measure of the effectiveness with which a lamp converts electric power into luminous flux, equal to the ratio of flux emitted to power input and expressed in lumens per watt

A

Efficacy

60
Q

a device for maintaining the current through a fluorescent or HID lamp at the desired constant value; also providing the required starting voltage and current

A

Ballast

61
Q

a device used with a ballast to provide the starting voltage for a preheat fluorescent lamp

A

Starter

62
Q

a tubular bulb for incandescent, fluorescent, and high-intensity-discharge lamps

A

T-Bulb

63
Q

a doughnut-shaped fluorescent lamp for circular luminaires

A

Circline Lamp

64
Q

a u-shaped fluorescent lamp for square or rectangular luminaires

A

U-Bent Lamp

65
Q

any of various small, improved efficiency fluorescent lamps; it emits a similar amount of visible light, uses less power, and has a longer rated life than incandescent lamps

A

Compact Fluorescent Lamp (CFL)

66
Q

the temperature at which a blackbody emits light of a specified spectral distribution, used to specify the color of a light source

A

Color Temperature

67
Q

a measure of the ability of an electric lamp to render color accurately when compared with a reference light source of similar color temperature

A

Color Rendering Index (CRI)

68
Q

a semiconductor device consisting of two materials, one having a surplus of positive charge and the other a surplus of negative charge when combined at a junction, releases light energy as a forward voltage is applied

A

Light Emitting Diode (LED)

69
Q

a surface for reflecting light, heat, or sound, especially the device on a luminaire having such a surface for controlling the distribution of light emitted by a lamp

A

Reflector

70
Q

a piece of transparent material such as glass/plastic having two opposite surfaces either or both of which are curved, used in luminaires to focus, disperse, or collimate the emitted light

A

Lens

71
Q

a lens having a multifaceted surface with parallel prisms to redirect the rays from a light source

A

Prismatic Lens

72
Q

any of a variety of translucent materials for filtering glare from a light source and distributing the light over an extended area

A

Diffuser

73
Q

a luminaire consisting off a lamp set in a metal cylinder, recessed into or mounted on a ceiling to direct a beam of light downward

A

Downlight

74
Q

a lamp designed to project a strong, focused beam of light on an object or area

A

Spotlight

75
Q

a downlight mounted close to the plane of a wall and equipped with a reflector, baffle, or lens to illuminate the vertical surface

A

Wall Washer

76
Q

lighting provided by adjustable spotlights mounted along a narrow, ceiling- or wall-mounted metal track through which current is conducted

A

Tracklighting

77
Q

indirect lighting directed upward from an interior cornice at the edge of a ceiling

A

Cove Lighting

78
Q

indirect lighting directed upward or downward from a light source concealed by a horizontal board or band

A

Valance Lighting

79
Q

the science, theory, or method of providing illumination through the use of electric lamps

A

Lighting

80
Q

lighting designed to provide a uniform level of illumination throughout an area

A

General Lighting

81
Q

lighting designed to provide a relatively high level of illumination over a small area, with a surrounding area of lower intensity from spill light

A

Local Lighting

82
Q

lighting designed to provide strong illumination for a visually demanding activity such as reading or sewing

A

Task Lighting

83
Q

the sensation produced by any brightness within the visual field that is sufficiently greater than the luminance to which the eyes are adapted to cause annoyance, discomfort, or loss of visibility

A

Glare

84
Q

lighting that calls attention to a particular object or feature in the visual field or that forms a decorative pattern on a surface

A

Accent Lighting

85
Q

a lighting fixture suspended from a ceiling or wall by a flexible cord, by which it can be raised or lowered

A

Droplight

86
Q

a lighting fixture suspended from a ceiling

A

Pendant

87
Q

a decorative lighting fixture suspended from a ceiling, usually having branched supports for a number of lamps

A

Chandelier

88
Q

a decorative wall bracket for candles or other lights

A

Sconce

89
Q

the angle of a light beam that intersects the candlepower distribution curve at points where the luminous intensity equals a stated percent of a maximum reference intensity

A

Beam Spread

90
Q

a procedure for determining the number and types of lamps, luminaires, or windows required to provide a uniform level of illumination on a work plane; take into account both direct and indirect lighting

A

Lumen Method

91
Q

a horizontal plane at which work is done and on which illumination is specified and measured; usually assumed to be 30 inches above the floor

A

Work Plane

92
Q

the intensity of light falling at any given place on a lighting surface, equal to the luminous flux incident per unit area, and expressed in lumens per unit of area

A

Illumination

93
Q

the unit of luminous flux, equal to the light emitted in a solid angle of one steradian by a uniform point source having an intensity of one candela

A

Lumen

94
Q

the unit of illumination, equal to one lumen per square meter

A

Lux

95
Q

a unit of illumination on a surface that is everywhere one foot from a uniform point; one lumen per square foot

A

Foot-Candle

96
Q

a lighting unit consisting of one or more electric lamps with all of the necessary parts and wiring for positioning and protecting the lamps, connecting the lamps to a power supply, and distributing the light

A

Luminaire

ID REVIEW for Boards (64 decks)

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