Eng English 7- Electrical terminology2

12Question1Question4Question5Question2Question3EngineeringEnglishLesson7SimpleelectricalMachineryandcomponentsElectricalpowergenerationDrivingForceDieselengineSteamboiler&turbineHydroelectricturbineWindturbineGasOilCoalNuclearGeneratorThedrivingforcemaybeGeneratorDieselengineElectricityLowpressuresteamturbineThesteamboilermaycreatethesteamusingGas,Oil,CoalorNuclearfuelsSteamBoilerSteamBoilerandTurbineDieselEngineHydroElectricityWindturbinesMagnetismTheendsofthemagnetarecalledpolesandtheyaredistinguishedfromeachotherbycallingthemNorthandSouth.Oppositepolesattract-similarpolesrepelSNBarMagnetMagneticfieldLinesofmagneticfluxTheunitsusedtomeasuremagneticfluxareWebersElectromagnetsElectromagnetsusethesameterminologySSoftIronCoreWirecoilswoundaboutacentralcoreN=S=SNCircuitboardorPrintedcircuitboards(PCB)ElectricalcomponentsaresolderedontotheboardandjoinedbythepathwaysprintedontotheboardWhatisaPrintedcircuitboard(PCB)SolderingIronSolderingIronSolderWhatwouldyouuseasolderingironforTomakeelectricaljointsIntegratedcircuit(IC),chip,ormicrochipWhatisaChiporMicrochip?Achipisaminiaturisedcircuit,maybeawholecircuitboardcompresseddowntoasinglecomponent.ExamplesofMicrochipsorintegratedCircuits3pinplugSocket3PinSocket2PinSocketWhatisthedifferencebetweenaplugandasocket?Whatvoltagewouldyougetfromthese?220VWhatisthemaximumcurrentyoucangetfromthisplug10ampsSinglephaseAexampleofa3phaseplugAnExtensionCableTo“extend”meanstomakebiggerorlongerSowhatisanextensioncordAnextensioncordisalengthofcableusedwhenthepowerleadisnotlongenoughtoreachthesocketAlwaysuncoilanextensioncable,beforeyouuseit.WhyTheinductioncausesthewiretoheatupandmaybemeltWhatwouldhappen?Whatwouldcallitwhenaccidentallyyouconnectedeachsideofthecircuit(i.e.redline)AsimplecircuitAshortcircuitTheresistancebecomeszero,thecurrentwouldincreaseThewiresmaymelt–equipmentmaybedamagedPotentialforasparkorfireFusesWhatdoesafusedoinacircuit?OldFashionedFusesCircuitorplugfuseCarfuseIntheeventofashortcircuitafusewillburnoutfirst,preventingdamagetomoreexpensiveequipmentBulbs(Filamentbulbs)DomesticBulbTorchBulbCarHeadlightBulbWhatarebulbsusedfor?BulbsareusedtoproducelightinanelectricalcircuitFluorescentBulbs/TubesWhydoweusefluorescentlightingMorecosteffective(i.e.Cheaperovertime)tubeslastmuchlongerMoreenergyefficientFluorescentTubesCompactfluorescentlamp(CFL),EnergySavingBulbAlreadytheenergysavingbulbisbecomingoldtechnologyDangerouschemicalsproducedbytheflorescenttubes/bulbs(Mercury,Hg),willleadtheirbeingbannedinthenearfutureThenewbulbsofthefuturewillbeLEDsWherehaveyouseentheLEDbulbs?Acircuitbreakeractsinthesamewayasafuseintheeventofanoverload(i.e.itbeaksthecircuitandpreventsdamage)TheyalsobeusedasaswitchItisthemodernequivalentofafuseCircuitBreakerEarthLeakageSwitchEarthLeakageSwitchCircuitBreakerEarthleakageswitchesandcircuitbreakerslookverysimilar,buttheyhaveadifferentfunction.Canyouexplainwhatitis?Circuitbreakersprotectagainstanincreaseinthecurrent(Amps)Theearthleakageswitchmonitorseitherthevoltageorcurrenttodetermineifaleaktoearthisoccurring,ifitis,thenitswitchesthepoweroffVeryusefulifapersonaccidentallytouchesalivewire,preventsanelectricshockPumpsWhatarepumpsusedfor?Pumpsareusedtomovedliquids(e.g.water,oil)ThemotorforsmallpumpsisusuallyelectricOutletInletPumpElectricmotorOneformofpumpusedforairisusuallycalledacompressor,asitusuallycompressestheairfrom0bartosay10barCanyouseewhatthiscompressorisusedforAclueThiscompressorisasmallportablecompressorusedtoinflatecartyresAirCompressorsFanDesktopFanCPUFanCarEngineFanFanscomeinallshapesandsizesWhatisthedifferencebetweenafanandacompressorThefanisdesignedtomovetheair,thecompressorcompressestheairElectricalcomponents2W2WResistorsinParallelBatteriesinSeriesElectricalterminology2W2WResistorinSeries1.5V1.5V1.5V1.5VBatteriesinParallelTotalTotalTotalTotal4W1W3V1.5VDiodeScaleincmExampleofvariousdiodesAdiodeisasimpleelectricalcomponentthatallowscurrenttoallowinonedirection,butnotthereversedirectionWhatisadiode?Lightemittingdiode(LED)LED’swillbecomemorecommonasalightsourceCommonlyusedoncircuitboardsSwitchSwitchescomeinallshapesandsizesLightswitchVariableResistorResistorAmmeterWhatdoesanammeterdo?ItmeasuresthecurrentflowinginacircuitAAmmetersareplacedinserieswithacircuitVoltmeterWhatdoesanvoltmeterdo?ItmeasuresthevoltagedropacrossacomponentinacircuitVVoltmetersareplacedinparallelwithsomecomponentinacircleSpeakerorloudspeakerWhatwouldaloudspeakerbeusedforSpeakerorLoudspeakerSymbolforloudspeakerConvertingelectricalsignalsintosoundElectricMotorWhatisaElectricMotorusedforAnElectricMotorisanenginedrivenbyelectricityTheycomeinallshapesandsizesandareusedforeverythingMSymbolforanelectricmotorAmplifierThisisthesymbolforanamplifier,althoughitislikelytobeanentirecircuitWhatisanamplifierusedfor?Whenasignalisverysmallorweak,anamplifierisusedtoincreasethesignalstrengthForexampletheradiosignalreceivedbytheTVisverysmall.ItwillhavetobeamplifiedtoproduceapictureandsoundfromthespeakersAerial(orAntenna)Whatisanaerial?AnaerialsendsorreceivesanradiosignalNotallaerialsareseen,