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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
a single insulated conductor or a bound or sheathed combination of conductors insulated from one another
Cable
26
a heavy conductor, usually in the form of a solid copper bar, used for collecting, carrying, and distributing large electric currents
Bus Bars
27
electric cable consisting of two or more insulated conductors protected by a flexible, helically wound metal wrapping
Armored Cable/BX Cable
28
electric cable consisting of a tubular copper sheath containing one or more conductors embedded in a highly compressed, insulating refractory material
Mineral-Insulated Cable
29
electric cable consisting of two or more insulated conductors enclosed in a nonmetallic, moisture-resistant, flame-retardant sheath
Nonmetallic Sheathed Cable
30
electric cable for transmitting high-frequency telephone, digital, or television signals consisting of an insulated conducting tube enclosing an insulated conducting core
Coaxial Cable
31
electric cable enclosed within a metallic sheath in order to reduce the effects of external electric or magnetic fields
Shielded Cable
32
the material that is a poor conductor of electricity; used for separating or supporting conductors to prevent the undesired flow of current
Insulator
33
the maximum operating temperature that its insulation can stand continuously
Conductor Ampacity
34
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
Conduit
35
a channel expressly designed to hold and protect electric wires and cables
Raceway
36
a point on a wiring system at which current is taken to supply an electric device or apparatus; refers to the entire box assembly
Outlet
37
a female fitting connected to a power supply and equipped to receive a plug; aka "socket"
Receptacle
38
an outlet usually mounted on a wall and housing one or more receptacles for portable lamps or appliances
Convenience Outlet
39
a junction box designed to facilitate connecting an electric device or receptacle to a wiring system
Outlet Box
40
an outlet intended for direct connection to a lamp holder, lighting fixture, or pendant cord terminating in a lamp holder
Lighting Outlet
41
an outlet where one or more receptacles are installed
Receptacle Outlet
42
a device for making, breaking, or directing an electric current
Switch
43
a protective plate surrounding an electric outlet or light switch
Faceplate
44
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
General Purpose Switches
45
a single-pole, double-throw switch used in conjunction with another to control lights from 2 locations
3-Way Switch
46
a switch used in conjunction with two three-way switches to control lights from 3 locations
4-Way Switch
47
a rheostat or similar device for regulating the intensity of an electric light without appreciably affecting spatial distribution
Dimmer Switch
48
a flexible, insulated conductor for electrically connecting an apparatus to another or to a circuit
Lead
49
a small, flexible, insulated cable fitted with a plug to connect a portable lamp or appliance to a receptacle
Cord
50
a male fitting for making an electrical connection to a circuit by insertion in a receptacle
Plug
51
a switch which the interruption of a circuit occurs in air
Air Switch
52
a form of air switch in which a hinged copper blade is placed between 2 contact clips
Knife Switch
53
a switch controlled by a conductor floating in a liquid
Float Switch
54
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
Mercury Switch
55
a switch operated only by inserting a key or a card; aka "card switch"
Key Switch
56
a sealed glass containing a filament connected at its ends to the contact area
Filament Lamps
57
any of various devices for producing light or head, as by electricity or gas
Lamp
58
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
Bulb
59
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
Efficacy
60
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
Ballast
61
a device used with a ballast to provide the starting voltage for a preheat fluorescent lamp
Starter
62
a tubular bulb for incandescent, fluorescent, and high-intensity-discharge lamps
T-Bulb
63
a doughnut-shaped fluorescent lamp for circular luminaires
Circline Lamp
64
a u-shaped fluorescent lamp for square or rectangular luminaires
U-Bent Lamp
65
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
Compact Fluorescent Lamp (CFL)
66
the temperature at which a blackbody emits light of a specified spectral distribution, used to specify the color of a light source
Color Temperature
67
a measure of the ability of an electric lamp to render color accurately when compared with a reference light source of similar color temperature
Color Rendering Index (CRI)
68
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
Light Emitting Diode (LED)
69
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
Reflector
70
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
Lens
71
a lens having a multifaceted surface with parallel prisms to redirect the rays from a light source
Prismatic Lens
72
any of a variety of translucent materials for filtering glare from a light source and distributing the light over an extended area
Diffuser
73
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
Downlight
74
a lamp designed to project a strong, focused beam of light on an object or area
Spotlight
75
a downlight mounted close to the plane of a wall and equipped with a reflector, baffle, or lens to illuminate the vertical surface
Wall Washer
76
lighting provided by adjustable spotlights mounted along a narrow, ceiling- or wall-mounted metal track through which current is conducted
Tracklighting
77
indirect lighting directed upward from an interior cornice at the edge of a ceiling
Cove Lighting
78
indirect lighting directed upward or downward from a light source concealed by a horizontal board or band
Valance Lighting
79
the science, theory, or method of providing illumination through the use of electric lamps
Lighting
80
lighting designed to provide a uniform level of illumination throughout an area
General Lighting
81
lighting designed to provide a relatively high level of illumination over a small area, with a surrounding area of lower intensity from spill light
Local Lighting
82
lighting designed to provide strong illumination for a visually demanding activity such as reading or sewing
Task Lighting
83
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
Glare
84
lighting that calls attention to a particular object or feature in the visual field or that forms a decorative pattern on a surface
Accent Lighting
85
a lighting fixture suspended from a ceiling or wall by a flexible cord, by which it can be raised or lowered
Droplight
86
a lighting fixture suspended from a ceiling
Pendant
87
a decorative lighting fixture suspended from a ceiling, usually having branched supports for a number of lamps
Chandelier
88
a decorative wall bracket for candles or other lights
Sconce
89
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
Beam Spread
90
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
Lumen Method
91
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
Work Plane
92
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
Illumination
93
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
Lumen
94
the unit of illumination, equal to one lumen per square meter
Lux
95
a unit of illumination on a surface that is everywhere one foot from a uniform point; one lumen per square foot
Foot-Candle
96
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
Luminaire

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