Flashcards
What is Electronics? (Introduction)
Flashcards do conjunto (45)
- 1A material is called a ______ if electricity can flow through it easily. (an example of this is copper)conductor
- 2Some materials, such as rubber, are called ______ because they have very high resistance to the flow of energy.insulators
- 3______ is the flow of electrons in a medium. (such as copper)Current
- 4Current is measured in units called ______.amperes
- 5______ is the abbreviation of amperes.A or amps
- 6______ is the electrical pressure that forces electrons to flow through a medium.Voltage
- 7Voltage is measured in units called _____.volts
- 8______ is the abbreviation for volts.V
- 9______ is the opposition to current flow presented by a medium.Resistance
- 10Resistance is measured in units called ______.ohms
- 11Ohms is often represented by the Greek letter ______.omega
- 12____________ are used by technicians as a form of "shorthand" to show how components are connected in circuits.Schematic diagrams
- 13_______ has a high resistance to current flow. It is often used as a heating element. (such as in a toaster)Nichrome
- 14Heating elements are also called _________.resistive elements (resistance is what makes them heat up)
- 15The resistive element in a _______ resistor is carbon mixed with a non-conducting substance, such as clay. In this type of resistor, the ratio of carbon to clay determines how much resistance it will have. (the more clay, the more resistance)carbon
- 16The ______ resistor uses nichrome wire as the resistive element. In this type of resistor, resistance value can be varied by making the wire longer or thinner. (the longer & thinner the wire, the more resistance)wirewound
- 17Batteries are a common source of ______ current.direct
- 18_____ is the abbreviation for direct current.DC
- 19Ordinary household current is ______ current.alternating
- 20______ is the abbreviation for alternating current.AC
- 21One complete reversal of AC is called a _____.cycle
- 22The rate at which AC cycles occur is called the ______.frequency
- 23Frequency is measured in units called ______.hertz
- 24_____ is the abbreviation for hertz.Hz
- 25Most electronic equipment runs on _____ current.DC
- 26To turn AC current to DC current, it needs to be ______.rectified
- 27In many circuits, the process of rectification is completed by a component called a _____.diode
- 28The action of converting AC current to DC current is called ______.rectification
- 29Diodes are often called ______.rectifiers
- 30The two ends of a diode are called the ______ and the ______.anode, cathode
- 31A diode will always be marked in some way to identify its ______ end.cathode
- 32The ______ end of a diode must be connected to the negative side of the voltage source in order for it to conduct electricity.cathode
- 33______ are a broad group of components that are used to convert some kind of environmental energy into electrical signals. (such as in a thermostat)Sensors
- 34A ______ is a resistor that responds to temperature changes by changing its resistance.thermistor
- 35A transistor had three leads: ______, ______, and ______.base, emitter, & collector
- 36The most basic operation of a transistor is _______.amplification
- 37On a printed circuit board, the components will be mounted from the ______ side of the board.substrate
- 38The substrate side of a printed circuit board is also called the ______ side.component
- 39The side of a printed circuit board that contains the conducting paths is called the ______ side.foil
- 40A ______ is used to measure electrical values such as ohms, amperes, and volts in circuits.multimeter
- 41Faults in electrical equipment often occur in the sections where voltages are converted. In these cases a piece of test equip. called a ______ can be used to test the device.power supply
- 42Electrical test equipment with screens that display readouts in digits have ______ displays.digital
- 43Electrical test equipment with displays that use pointers and scales to give readouts have ______ displays.analog
- 44The ______ is an instrument that measures electrical signals and displays them on a tv-like screen.oscilloscope
- 45A ________ is a troubleshooting tool that's used to produce simulated electronic signals in a circuit.signal generator
Informações
- Descrição
- Here we have some of my flashcards/notes from my electronics technician course at Penn Foster. I suggest listening to some ambient study music while you go through these. In my humble opinion, it helps with concentration. Enjoy. >:D
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- That Yeti Dog Person
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