commutatora reversing switchthat keeps themotor turningsmoothly byflipping the currentdirection at just theright time.regulatorControlsalternatoroutputvoltage.circuitA completepath forcurrent toflow.current(I)The flow ofelectrons througha conductor,measured inamperes (amps).oscilloscopean electronic testinginstrument thatgraphically displayselectrical signals as awaveform on ascreen, showing howvoltage changes overtime.statorthestationarycoil of wireinside thealternatorcontinuitytestCheck tosee if acircuit pathis complete.loadAny componentthat useselectricalenergy (bulb,motor, heater,etc.).harnessBundle ofelectricalwires inprotectivecovering.batteryStores electricalenergy inchemical form;provides voltageto the system.shortcircuitUnintendedpath of lowresistancecausingexcessivecurrent flow.opencircuitA break orinterruptionin the circuitpreventingcurrent flow.voltage(V)Electricalpressure orpotentialdifference thatpushes currentthrough a circuit.rectifierdiodeConverts ACcurrent toDC currentinside thealternator.watt(W)Unit ofelectricalpower; Power= Voltage ×Current.solenoidElectromagneticswitch thatmoves a plungeror contacts(used instarters).seriescircuitComponentsconnected end-to-end; samecurrent flowsthrough all.switchManuallyoperateddevice thatopens or closesa circuit.parallelcircuitComponentsconnectedacross the samevoltage; currentdivides amongbranches.groundCommon returnpath forelectricalcurrent; typicallyconnected to thevehicle chassis. terminalConnectionpoint forwiring orcomponents.fuseProtectivedevice thatmelts to openthe circuit whencurrent is toohigh.capacitorStoreselectricalcharge andreleases itwhen needed.circuitbreakerReusableovercurrentprotectiondevice.Multimeter(DVOM)Tool used tomeasurevoltage,resistance,and current.continuityA completepath with noopen circuits;verified with ameter.relayElectricallyoperated switchused to controlhigh-currentcircuits with lowcurrent.alternatorGenerateselectricalcurrent whilethe engineruns; chargesthe battery.connectorDevice thatjoins electricalwires orcomponentstogether.parasiticdrawUnwantedelectrical drainfrom the batterywhen thevehicle is off.ampere(Amp)Unit used tomeasureelectricalcurrent flow.resistance(R)Oppositionto currentflow,measured inohms (Ω)EEPROMa type of non-volatilememory used incontrol modules(ECUs/ECMs) tostore data even whenthe vehicle’s batteryis disconnected.troublecode(DTC)Diagnosticcode stored bythe vehicle’scontrol modulewhen a faultoccurs.cotterpina metal fastener usedto secure otherfasteners, such asnuts or bolts, andprevent them fromloosening due tovibration.resistorComponentthat limits orcontrolscurrent flow.Ohm’sLawThe relationshipbetweenvoltage, current,and resistance:V = I × RreferencevoltageStable voltage(usually 5V)supplied byan ECU to asensor.commutatora reversing switchthat keeps themotor turningsmoothly byflipping the currentdirection at just theright time.regulatorControlsalternatoroutputvoltage.circuitA completepath forcurrent toflow.current(I)The flow ofelectrons througha conductor,measured inamperes (amps).oscilloscopean electronic testinginstrument thatgraphically displayselectrical signals as awaveform on ascreen, showing howvoltage changes overtime.statorthestationarycoil of wireinside thealternatorcontinuitytestCheck tosee if acircuit pathis complete.loadAny componentthat useselectricalenergy (bulb,motor, heater,etc.).harnessBundle ofelectricalwires inprotectivecovering.batteryStores electricalenergy inchemical form;provides voltageto the system.shortcircuitUnintendedpath of lowresistancecausingexcessivecurrent flow.opencircuitA break orinterruptionin the circuitpreventingcurrent flow.voltage(V)Electricalpressure orpotentialdifference thatpushes currentthrough a circuit.rectifierdiodeConverts ACcurrent toDC currentinside thealternator.watt(W)Unit ofelectricalpower; Power= Voltage ×Current.solenoidElectromagneticswitch thatmoves a plungeror contacts(used instarters).seriescircuitComponentsconnected end-to-end; samecurrent flowsthrough all.switchManuallyoperateddevice thatopens or closesa circuit.parallelcircuitComponentsconnectedacross the samevoltage; currentdivides amongbranches.groundCommon returnpath forelectricalcurrent; typicallyconnected to thevehicle chassis. terminalConnectionpoint forwiring orcomponents.fuseProtectivedevice thatmelts to openthe circuit whencurrent is toohigh.capacitorStoreselectricalcharge andreleases itwhen needed.circuitbreakerReusableovercurrentprotectiondevice.Multimeter(DVOM)Tool used tomeasurevoltage,resistance,and current.continuityA completepath with noopen circuits;verified with ameter.relayElectricallyoperated switchused to controlhigh-currentcircuits with lowcurrent.alternatorGenerateselectricalcurrent whilethe engineruns; chargesthe battery.connectorDevice thatjoins electricalwires orcomponentstogether.parasiticdrawUnwantedelectrical drainfrom the batterywhen thevehicle is off.ampere(Amp)Unit used tomeasureelectricalcurrent flow.resistance(R)Oppositionto currentflow,measured inohms (Ω)EEPROMa type of non-volatilememory used incontrol modules(ECUs/ECMs) tostore data even whenthe vehicle’s batteryis disconnected.troublecode(DTC)Diagnosticcode stored bythe vehicle’scontrol modulewhen a faultoccurs.cotterpina metal fastener usedto secure otherfasteners, such asnuts or bolts, andprevent them fromloosening due tovibration.resistorComponentthat limits orcontrolscurrent flow.Ohm’sLawThe relationshipbetweenvoltage, current,and resistance:V = I × RreferencevoltageStable voltage(usually 5V)supplied byan ECU to asensor.

CATS ASE Electrical - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. a reversing switch that keeps the motor turning smoothly by flipping the current direction at just the right time.
    commutator
  2. Controls alternator output voltage.
    regulator
  3. A complete path for current to flow.
    circuit
  4. The flow of electrons through a conductor, measured in amperes (amps).
    current (I)
  5. an electronic testing instrument that graphically displays electrical signals as a waveform on a screen, showing how voltage changes over time.
    oscilloscope
  6. the stationary coil of wire inside the alternator
    stator
  7. Check to see if a circuit path is complete.
    continuity test
  8. Any component that uses electrical energy (bulb, motor, heater, etc.).
    load
  9. Bundle of electrical wires in protective covering.
    harness
  10. Stores electrical energy in chemical form; provides voltage to the system.
    battery
  11. Unintended path of low resistance causing excessive current flow.
    short circuit
  12. A break or interruption in the circuit preventing current flow.
    open circuit
  13. Electrical pressure or potential difference that pushes current through a circuit.
    voltage (V)
  14. Converts AC current to DC current inside the alternator.
    rectifier diode
  15. Unit of electrical power; Power = Voltage × Current.
    watt (W)
  16. Electromagnetic switch that moves a plunger or contacts (used in starters).
    solenoid
  17. Components connected end-to-end; same current flows through all.
    series circuit
  18. Manually operated device that opens or closes a circuit.
    switch
  19. Components connected across the same voltage; current divides among branches.
    parallel circuit
  20. Common return path for electrical current; typically connected to the vehicle chassis.
    ground
  21. Connection point for wiring or components.
    terminal
  22. Protective device that melts to open the circuit when current is too high.
    fuse
  23. Stores electrical charge and releases it when needed.
    capacitor
  24. Reusable overcurrent protection device.
    circuit breaker
  25. Tool used to measure voltage, resistance, and current.
    Multimeter (DVOM)
  26. A complete path with no open circuits; verified with a meter.
    continuity
  27. Electrically operated switch used to control high-current circuits with low current.
    relay
  28. Generates electrical current while the engine runs; charges the battery.
    alternator
  29. Device that joins electrical wires or components together.
    connector
  30. Unwanted electrical drain from the battery when the vehicle is off.
    parasitic draw
  31. Unit used to measure electrical current flow.
    ampere (Amp)
  32. Opposition to current flow, measured in ohms (Ω)
    resistance (R)
  33. a type of non-volatile memory used in control modules (ECUs/ECMs) to store data even when the vehicle’s battery is disconnected.
    EEPROM
  34. Diagnostic code stored by the vehicle’s control module when a fault occurs.
    trouble code (DTC)
  35. a metal fastener used to secure other fasteners, such as nuts or bolts, and prevent them from loosening due to vibration.
    cotter pin
  36. Component that limits or controls current flow.
    resistor
  37. The relationship between voltage, current, and resistance: V = I × R
    Ohm’s Law
  38. Stable voltage (usually 5V) supplied by an ECU to a sensor.
    reference voltage