Alli Terms

Question 0

Greek philosopher who observed that amber attracted small bits of straw after rubbing

Answer 0

Thales

Question 1

reciprocal of impedance

Answer 1

admittance

Question 2

magnetic black rock

Answer 2

loadstone

Question 3

Latin word for amber

Answer 3

electrum

Question 4

he devised the word electricity

Answer 4

Sir Thomas Browne

Question 5

French physicist who formulated the laws on attraction and repulsion between charged bodies

Answer 5

charles coloumb

Question 6

built the first battery called the voltaic pile

Answer 6

count alessandro volta

Question 7

“animal electricity”, first experiments with electric current

Answer 7

luigi galvani

Question 8

danish physicist that moved the needle of a compass with a strong current

Answer 8

hans christian oersted

Question 9

measured the effect of two parallel currents on each other

Answer 9

andre’ marie ampere

Question 10

worked out the law of electrical resistance

Answer 10

georg simon ohm

Question 11

designed the first hydroelectric power statin

Answer 11

nikola tesla

Question 12

developed the incandescent lamp and the central electric light-power station

Answer 12

thomas edison

Question 13

discovered chlorides of carbon and succeeded in liquefying chlorine and other gases

Answer 13

michael faraday

Question 14

discovery of electromagnetic induction and self-induction

Answer 14

joseph henry

Question 15

first to demonstrate the existence of electric waves

Answer 15

heinrich hertz

Question 16

theorized that magnetic fields produced radiant energy

Answer 16

james maxwell

Question 17

designed a dynamo

Answer 17

werner von siemens

Question 18

development of steam engine

Answer 18

james watt

Question 19

focused on the absolute unit of electrical resistance

Answer 19

wilhelm edward weber

Question 20

invented the air brake system to stop trains

Answer 20

george westinghouse

Question 21

electricity that flows through a substance in the form of an electric current

Answer 21

dynamic electricity/ electrodynamics

Question 22

electricity that remains on the surface of a body as a charge

Answer 22

static electricity

Question 23

when a bar of hardened steel is rubbed with a natural magnet

Answer 23

artificial magnets

Question 24

a coil of wire in which a magnetic circuit is completed through a magnetic material

Answer 24

electromagnet

Question 25

iron ores called magnetite

Answer 25

natural magnets

Question 26

soft iron core would with a coil or insulated wire

Answer 26

electromagnets

Question 27

a periodic current, the average value of which over a period is zero

Answer 27

alternating current

Question 28

changes mechanical power to electrical power

Answer 28

alternator/ synchronous generator

Question 29

instrument for measuring electric current

Answer 29

ammeter

Question 30

current that a conductor can carry continuously

Answer 30

ampacity

Question 31

a charge flor of one coulomb per second

Answer 31

ampere

Question 32

current-consuming equipment

Answer 32

appliance

Question 33

branch circuit that supplies energy to one or more outlets

Answer 33

appliance branch circuit

Question 34

synthetic non-flammable insulating liquid used in transformers as insulator

Answer 34

askarel

Question 35

device used to transfer load from one power source to another

Answer 35

automatic transfer equipment

Question 36

houses subbreakers, a sheet metal enclosure for stuff

Answer 36

auxiliary gutter

Question 37

device used with fluorescent and high-intensity discharge lamps

Answer 37

ballast

Question 38

circuit conductors between the final overcurrent device protecting the circuit and the outlets

Answer 38

branch circuit

Question 39

synthetic rubber insulation

Answer 39

buna

Question 40

conductor that serves as a common connection for 3 or more circuits in a switchgear assembly

Answer 40

bus

Question 41

metallic bar used to provide common contact or termination for a group of wires

Answer 41

busbar

Question 42

protective covering applied over a cable

Answer 42

cable sheath

Question 43

to open and close a circuit by non-automatic means on a predetermined over-current without damage to tself

Answer 43

circuit breaker

Question 44

an arrow having circuit number designating the point at which the branch circuit will be connected

Answer 44

circuit homerun

Question 45

unit for measuring the cross-sectinal area of a conductor

Answer 45

circular mill

Question 46

measure of permissiveness to charge flow; reciprocal of resistance

Answer 46

conductance

Question 47

substance that has free electrons

Answer 47

conductor

Question 48

conductor having no covering/insulation

Answer 48

bare conductor

Question 49

conductor encased within material of compositino and thickness

Answer 49

insulated conductor

Question 50

reciprocal of the resistivity of the substance

Answer 50

conductivity

Question 51

structure containing one or more ducts

Answer 51

conduit

Question 52

an electrical charge of 6.28 x 10^18 electrons

Answer 52

coulomb

Question 53

rate of charge flow

Answer 53

current

Question 54

enclosure designed for surface mounting

Answer 54

cutout box

Question 55

ratio of the maximum demand of a system

Answer 55

demand factor

Question 56

unit of an electrical system that is intended to carry but not utilize electrical energy

Answer 56

device

Question 57

energy is divided among feeders; overcurrent devices are usually located here

Answer 57

distribution center

Question 58

a conducting path through which electric charges may flow

Answer 58

electric circuit

Question 59

converts electrical energy into mechanical energy

Answer 59

electric motor

Question 60

comprises of the volt, ampere, ohm.....

Answer 60

electrical units

Question 61

transient wave of current, potential, or power in the electric circuit

Answer 61

electrical surge

Question 62

physical entity; atomic structure of matter; expenditure of energy

Answer 62

electricity

Question 63

process of electromotive force induced by movement of magnetic flux

Answer 63

electromagnetic induction

Question 64

energy-charge relation that results in electric pressure that produces charge flow

Answer 64

electromotive force (EMF)

Question 65

branch of electrical science dealing with the laws of electricity at rest

Answer 65

electrostatics

Question 66

unit of capacitance

Answer 66

farad

Question 67

all circuit conductors between the service equipment, the source of a separately derived system, and the final branch circuit overcurrent device

Answer 67

feeder

Question 68

disruptive electrical discharge around an insulator

Answer 68

flashover

Question 69

instrument for indicating comparatively small currents

Answer 69

galvanometer

Question 70

converts mechanical energy into electrical energy

Answer 70

generator

Question 71

conducting connection between an electric circuit and the earth

Answer 71

ground

Question 72

unit of inductance

Answer 72

henry

Question 73

magnetic property of a substance which results from radial magnetism

Answer 73

hysteresis

Question 74

opposition to AC current by a combination of resitance and reactance

Answer 74

impedance

Question 75

does not allow the flow of electricity through it

Answer 75

insulator

Question 76

used to convert dc to ac

Answer 76

inverter

Question 77

short length of conductor used to make a connectin between terminals

Answer 77

jumper

Question 78

box that joins different runs of cable

Answer 78

junction box

Question 79

device for paths for lightning disturbances

Answer 79

lightning arrestor

Question 80

unit of conductance; reciprocal of ohm

Answer 80

mho

Question 81

unit of resistance

Answer 81

ohm

Question 82

law states that current is directly proportional to the applied voltage and inversely proportional to resistance, reactance or impedance

Answer 82

ohms law

Question 83

operation of equipment in excess of normal

Answer 83

overload

Question 84

produced when 1 unit of work in done in separating unit charges through unit distance

Answer 84

potential difference

Question 85

static ac device used to change voltage

Answer 85

transformer

Question 86

interruption of contact in devices

Answer 86

tripping

Question 87

intended for receptacle outlet or switch plate installation

Answer 87

utility box

Question 88

unit of emf

Answer 88

volt

Question 89

drop in electric pressure

Answer 89

voltage drop

Question 90

unit of electrical power

Answer 90

watt