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36 Cards in this Set
- Front
- Back
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Alternating Current |
Current that changes direction |
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Aloy |
A mixture of more than one metals |
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Retentivity |
The ability of a magnet to keep its magnetic domains aligned for a long period of time |
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G.F.I |
Ground fault interupter |
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D.P |
Double pole |
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C.T |
Current Transformer |
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K.W.H |
Kilo watt hour |
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The two basic components that causes a cell to produce electricity |
The electrode and electrolyte |
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A switch that will allow time for you to leave the area before switching off the light |
Time delay switch |
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A pig tail connection |
wires connected with a wire nut |
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A recessed incandescent fixture |
An incandescent fixture that is inside the ceiling or wall |
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The two most common types of over current protection |
Fuses and circuit breakers |
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The function of two low-voltage coils in a control relay |
To control high voltage contacts |
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the name of a naturally occurring magnet |
Load stone |
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The strongest point on magnets |
At the poles |
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The voltage used in houses for portable equipment
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120 volts |
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The length and maximum diameter that the conduit is usually produced |
Usual length 10feet Maxim diameter 1/2 of an inch
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The voltage used in houses for heavy duty equipment |
240 volts |
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D.C |
Direct current |
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H.V |
High voltage |
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A.C |
Alternating Current |
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O.C.B |
Oil circuit breaker |
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3 Magnetic materials |
Nickle, Iron, cobalt |
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Three non Magnetic materials |
Plastic wood cotton |
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The two laws of magnetism |
#1) like poles repel #2)unlike poles attract |
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Permeability |
The ability to conduct magnetic lines of force |
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Three methods of demagnetizing a magnet |
Heating striking demagnetizer |
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The three types of pliers |
Long nose, diagonal cutting and combination pliers |
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The most versatile pliers |
Combination pliers |
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Three types of screwdrivers |
Flat head, Phillips, Robinson |
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Four types of lamp bases |
Candelabra Medium large mogul |
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The most common lamp base |
Medium |
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The difference between watts and lumens |
Watts indicates the amount of energy and lamp uses however lumens indicates how bright and lamp is. |
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The purpose of the switch in a circuit |
The switch controls the circuit turning the load on and off |
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The two types of materials Ground Rods (earth electrodes) are made |
Copper and galvanized steel |
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The two main methods for bringing a 3 wire distribution system in a house |
Over head and underground |
