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1、电气英语证书考试(PEC)-GlossaryofElectricalEngineeringTerms4Autoranging:ADMMthatautomaticallyselectstherangewiththebestresolutionandaccuracyinresponsetotheapplication.AAC:AmpsalternatingcurrentAC/DC:AswitchdesignatedforusewitheitherAlternatingCurrent(AC)orDirectCurrent(DC).ACOnly:Aswitchdesi
2、gnatedforusewithAlternatingCurrent(AC)only.ACPower:ACstandsfor alternatingcurrent,whichisanelectricalcurrentthatfrequentlyreversesdirection.ACelectricityismeasuredaccordingtoits cycles,withonecompletecyclebeingcountedeachtimeagivencurrenttravelsinonedirectionandthendoublesbackonitse
3、lf.Anelectricalcurrentisabletocompletemanycyclespersecond,andisthengivenitsfrequencyratingbasedonthatnumber;forexample,thetypicalfrequencyinNorthAmericais60hertz(Hz),whichindicatesthatthecurrentisperforming60cyclespersecond.ACpoweristhetypeofelectricitymostcommonlyusedinhomesandoffi
4、ces,andisextremelyversatilebecauseitsvoltagecanbechangedthroughatransformertosuitavarietyoftransmissionneeds.ADC:Dataconvertingfromanalogtodigitalformat.AL/CU:30A,50Aor60Areceptaclesdesignatedforusewithaluminumorcoppercircuitconductors,identifiedby"AL/CU"stampedonthedevice.Receptacl
5、eswithoutthisdesignationmustneverbeusedwithaluminumcircuitconductors.ActivePower:Alsoknownas‘RealPower’orsimply‘Power’.Activepoweristherateofproducing,transferorusingelectricalenergy.Measuredinwattsandoften-expressedinkWorMW.Adapter:Anaccessoryusedforinterconnectingnon-matingdevices
6、orconvertinganexistingdeviceformodifieduse.Ampere(Amp):Theampere,or amp,isthemeasureofanelectricalcurrentinagivencircuit.Asingleampisequalto6,280,000,000,000,000,000electronspassingaspecificpointinonesecond.Amplitude:Anon-negativescalarmeasureofawave'smagnitudeofoscillation,thatis,t
7、hemagnitudeofthemaximumdisturbanceinthemediumduringonewavecycle.AnalogMeter:Amechanicalmeasuringdeviceusinganeedlemovingacrossagraduatedscaleordial. Angle:Aplugorconnectorthatallowstheattachedflexiblecordtoexitatrightangles. ArcFault:Arcingfaultsareoneofthemajorcausesofthesefires.Wh
8、enunwantedarcingocc
