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Asvab Electrical
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Terms in this set (39)
watt
measures electrical power (energy consumed)
ampere
measures electrical current (strength)
volt
measures electrical pressure
ohm
measures electrical resistance
hertz
measures frequency of alternating current
short circuit
a circuit with no resistance
ohm's law
the relationship between voltage, amperage and resistance
amperes = volts / ohms
ohm's law (write it out)
ohms = volts / amperes
find ohms from volts and amperes
volts = amperes * ohms
find volts from amperes and ohms
amperes = volts / ohms
find amperes from volts and ohms
law of electric power
law dictating the amount of power consumed by a device
watts = volts * amperes
law of electric power (write it out)
step-up transformer
two electromagnets that increase the voltage of the current
step-down transformer
two electromagnets that decrease the voltage of the current
generator
device that changes kinetic into electric energy
motor
device that changes electric into kinetic energy
rotor
a spinning electromagnet
stator
a stationary magnet
capacitor
a device that briefly contains electricity
resistor
a device that creates resistance to the flow of electrons
transformer
a device that changes voltage and amperage of a current
series circuit
a circuit where all moving electrons pass through every part of the circuit
parallel circuit
a circuit where the voltage is the same at all points in the circuit
total resistance
added resistance of all points in the circuit
series-parallel circuit
combination of the two basic circuit types
dopants
chemical that determines whether silicon will be an insulator or a conductor
transistor
devices that can switch a current, regulate its flow or amplify a current
diode
devices that allow a current to travel in only one direction
rectifiers
devices that transform AC into DC
12
gauge wire needed for 20-ampere circuit
14
gauge wire needed for 15 ampere circuit
conductor
an element that freely conducts electricity
Direct Current or DC
Current only flows one way in a conductor
Alternating Current or AC
current flowing in a conductor changes direction (moves back and forth) many times.
Electrical Power
refers to the actual rate at which energy is provided to and consumed by an electric circuit.
capacitive reactance
A capacitor's opposition to the flow of current
Silicon and Germanium
Elements that are widely recognized as semiconductors.
Diode
When P-type material is joined with N-type material. An electrical one way valve.
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