Technology

Front 1

Technology

Back 1

The use of tools materails and knowledge to slove problems

Front 2

Electricity

Back 2

Moving electrons

Front 3

Practical Circuit

Back 3

a collection of devices that let use use electricity saftly and effieciently

Front 4

Parts of a circuit

Back 4

load,source,complete conductor path,control, and protection

Front 5

Circuit problems

Back 5

Open circuit-conductor path is not complete
Short circuit-electricity can flow through the circuit without going though the load

Front 6

Volt

Back 6

measure of electrical pressure

Front 7

Amp

Back 7

measure of the rate of flow of electricity

Front 8

Ohm

Back 8

measure of electrical resistence

Front 9

Series circuit

Back 9

only one path for the current to flow through

Front 10

Parallel circuit

Back 10

more than one path for the current to flow through

Front 11

Combonation Circuit

Back 11

combines both series and parallel circuits into one circuit

Front 12

Insulator

Back 12

a material that i different (but not impossible) for electricity to flow though

Front 13

Conductor

Back 13

a material that is easy for electricity to flow through

Front 14

Type NM

Back 14

Nonmetallic outer covering

Front 15

14

Back 15

wire gage

Front 16

2

Back 16

2 conductors (one black and one white)

Front 17

W/G

Back 17

with gage wire

Front 18

Duplex outlet (color coding rules)

Back 18

White wire directly to one side of the applience

Black wire directly to second side of the applience

Front 19

One lamp controlled by one SPST switch

Back 19

White wire directly to one side of the applience

Black wire to one side of switch

Black wire from second side of switch to applience

Front 20

Schematic Drawing

Back 20

uses symbols to represent electrical components

Front 21

SPST

Back 21

single pole double throw

Front 22

SPDT

Back 22

single pole double throw

Front 23

DPDT

Back 23

double pole double throw

Front 24

DPST

Back 24

double pole single throw

Front 25

The fatal current

Back 25

.01 amp

Front 26

Ground fault

Back 26

is a small elcetrical current that "leaks" from the hot wire to ground. A ground fault can produce a severe electric shock in damp locations.

Front 27

Ground fault circuit interrupter (GCFI)

Back 27

a protective device that detects even small ground faults and disconnects the circuit

Front 28

Solder

Back 28

an alloy of tin and lead

Front 29

Alloy

Back 29

a combination of two or more metals that has properties different from any of the original metals

Front 30

Flux

Back 30

a chemical that cleans metal so that the solder will stick to it

Front 31

Splice

Back 31

a mechanical connection between two or more wires

Front 32

Relay

Back 32

a magnetically operated switch

Front 33

N.O. contact

Back 33

normally open- contact is open when relay is off

Front 34

N.C. contact

Back 34

normally open- contact is closed when relay is off

Front 35

to find current

Back 35

current = Volts divided by ohms (I= divided by R)

Front 36

to find volts

Back 36

volts= volts = amps X ohms

Front 37

to find ohms

Back 37

ohms = volts divided by amps ( R= E divided by I)

Front 38

To solve ohm's law equations

Back 38

1. write down the equation
2. put the values you know
3. do the math
4. label your answer

Front 39

Energy

Back 39

(quantity) the ability to do work or bring about a change
(measured in kilowatt hours)

Front 40

Power

Back 40

(rate) the rate at which work is being done (measured in watts or horsepower)

Front 41

Ohms' Law

Back 41

the mathmatical relationship between volts, amps, ans ohms in a circuit