WhichisaNOTline-of-sightprocess?(Repeat2010) not repeat; A B

Question 1. WhichisaNOTline-of-sightprocess?(Repeat2010) not repeat! but which is a line of sight process (a) Physicalvapordeposition (b) Flamespray (c) Chemicalvapordeposition (d) Hardfacing (e) Highvelocityoxyfuelspray Answer is Percent of accuracy%(10 -100) Reference if possible 2. Thereare“BasicRulesforThermalSpray”.Pickouttheoneexamplefromthosebelowthatisincorrect. (a) Adjustthe“Tv+p”conditionsfordifferentprocessesandmaterials. (b) Spraywithcorrectandadequatesurfacepreparation. (c) DonotuseTScoatingsasstructuralmembers. (d) Alwaysconsiderthefeedrateandspraydistance. (e) Edgesshouldnotbechamferedandcornersradiused. Answer is Percent of accuracy %(10 -100) Reference if possible 3. Wire-arcsprayrequiresfeedstocksthatare/have:(Repeat2010) (a) Electricallyconductive. (b) Ductile. (c) Highmeltingpoint. (d) Nonreactivewithoxygen (e) Combustible Answer is Percent of accuracy %(10 -100) Reference if possible 4. RefertoFigure9whichshowsadiagram ofaHVOFtorch.Identifythepartthatis labelled“A”. (a) Oxygenline (b) Fuelline (c) Powderinjector (d) Combustor (e) Watercooling Figure5 Answer is Percent of accuracy %(10 -100) Reference if possible 5. Whatisthebestmediumtouseforstartinganontransferredarcplasmaspraytorch. (a) Agaseousmixtureofhydrogenandnitrogen (b) Highpurityargon (c) Highpurityhelium (d) Agasousmixtureofheliumandhydrogen (e) Highpurityoxygen Answer is Percent of accuracy %(10 -100) Reference if possible 6. RefertoFigure9whichshowsadiagramofaplasmaspraytorch.Whatistheflametemperatureat20mmdownstreamfrom thetorchand labelled “Y”? (a)1000?C(b)3000?C(c)5000?C(d)10000?C(e)20000?C Answer is Percent of accuracy %(10 -100) Reference if possible 7. Whichof the followingparticlemorphologiesisconsideredidealasafeedstockpowderfromonlytheviewpointoffeeding? (a) Anangularshapedfeedstockpowder (b) Asphericalshapedfeedstockpowderthathasaverylargerangeofparticlesizedistributions (c) Ablendedpowderofangularmetalparticlesandsphericalceramicparticles (d) Aperfectlyspherical-shapedparticlewithaverynarrowparticlesizedistribution (e) Agglomeratedfeedstockpowder Answer is Percent of accuracy %(10 -100) Reference if possible 8. ThepowdercharacteristicsofacertaintypeofpartiallystabilisedzirconiahavebeensummarisedinFigure7.Whichofthefollowingwouldbethemostpreferredthermalsprayfeedstock? Figure8 (a) Fusedandcrushed (b) Sinteredandcrushed (c) Spraydried (d) Plasmafused (e) Solgel Answer is Percent of accuracy %(10 -100) Reference if possible 9. Theprimecharacteristicofagasatomizedpowderis: (a) Angularandirregularlyshapedparticles. (b) Generallysphericalshapeinavarietyofsizes. (c) Extremelyfinesizes(<1micron). (d) Exceptionallyhighdegreeofporosity. (e) Veryeconomicalpowderproductionmethod Answer is Percent of accuracy %(10 -100) Reference if possible 10. Thisquestionrelatestothepowdermanufacturingandtheresultingmorphology.Whichofthefollowingstatementsbestdescribesthemanufacturedmorphologyofthepowders? (a) Gasatomisedpowdersresultinadenseandsphericalmorphology. (b) Gasatomisedpowdershaveaporousandangularmorphology. (c) Wateratomisedpowdersresultinaporousandsphericalmorphology. (d) Agglomerateandsinteredpowdershavedenseandsphericalmorphology. (e) Sinteredandcrushedpowdersaresphericalandporous. Answer is Percent of accuracy %(10 -100) Reference if possible 11. Theprimecharacteristicsofacrushedandmilledpowderare: (a) Smoothedgesandclosecontrolofparticlesizes. (b) Angularfeaturesandatendencytomanufacturesub-micronparticles(fines). (c) Angularfeaturesandverywideparticle-sizedistribution. (d) Asphericalmorphologyandabilitytoproduceahomogeneouschemicalcomposition. (e) Aagglomeratedfeedstockpowderthathasaverylargerangeofparticlesizedistributions Answer is Percent of accuracy %(10 -100) Reference if possible A B C D Figure9 12. Figure7abovesummariesthevariousthermalsprayfeedingsystems.Identifywhichofthefollowingstatementsiscorrect. (a) Allofthethermalsprayfeedsystemsshowncanbeusedforthewire-arcsprayprocess. (b) Label‘A’isagravityandvibrationbasedsystem (c) Label‘B’describesasystemthatcanbeusedforwetpowders. (d) Label‘C’isafluidizedbedbasedsystem (e) Label‘D’describesrotatingwheelsystem. Answer is Percent of accuracy %(10 -100) Reference if possible 13. Whichofthefollowingisnotanadvantageofthesol-gelmanufacturingtechnique? (a) Abilitytoproducesphericalpowderswhicharefree-flowing. (b) Closelycontrolledpowdercompositionassol-gelisbasedonsolutionchemistry. (c) Itisahigh-temperatureprocess;verydensematerialscanbeproduced. (d) Thedegreeofpowderporositycanbecontrolled. (e) Verysmallprimaryparticlesizescanbeachieved(2-20nm) Answer is Percent of accuracy %(10 -100) Reference if possible 14. TherearefourmajortypesoffeedstockmorphologyforcarbidethecharacteristicsofeachindividualmorphologycanbeseeninFigure8.Pleaseidentifypowderfeedstockmorphologydescribeandlabeled“C”? (a) Sintered (b) Coated (c) Agglomerated (d) Spheroidized (e) Cladded Figure10 Answer is Percent of accuracy %(10 -100) Reference if possible 15. Withrespecttosafethermalsprayoperationswhichofthefollowinglistsbestdescribetheessentialpersonalprotectiveequipment(PPE)forallthermalsprayoperators. (a) Earplugsplasticglassesplasticglovesclothmask (b) Corkacousticbarrierplasticglassesplasticmaskleatherglove (c) Earplugsplasticgloveslabcoatsteelcapboots (d) Earplugsleatherglovesfaceshieldwithweldingglassesfineparticulaterespiratormask (e) Plasticglassesfineparticulaterespiratormasklabcoatleat Answer is Percent of accuracy %(10 -100) Reference if possible 16. Whatisthebestwaytoimprovetheimpactresistanceandreducecoatingbrittlenessinthermallysprayedcomponents? (a) Postheattreat (b) Sprayhot (c) Usenopreheat (d) Machinethecoating (e) Quenchthecoatinginoilafterspraying Answer is Percent of accuracy %(10 -100) Reference if possible 17. Heat-treatedsteelsubstratesshouldnotbepreheatedabove150°C(300°F)andkeptathightemperatureforlongtimesbecause: (a) Onlythincoatingscanbeapplied. (b) Coatingswillbeveryhard. (c) Preheatingmaychangepriorheat-treatedpropertiesofthesubstrate. (d) Coatingswillnotoxidize. (e) Thecoatingmayreactstronglywiththesubstrate Answer is Percent of accuracy %(10 -100) Reference if possible 18. Whatisthefirststepinsubstratesurfacepreparation? (a) Masking (b) Gritblastingforroughness (c) Preheating (d) Cleaningtoremovegreaseandoils (e) Macrorougheningbymachining Answer is Percent of accuracy %(10 -100) Reference if possible 19. Partandgunrelativemotionarecriticalformanyreasons.Whichofthefollowingismostlikelytooccurifmotionisnotproperlymanaged? (a) Coatingsareuneven. (b) Coatingswillturnblack. (c) Thegunwillnotoperate. (d) Thesubstratewilloxidize. Answer is Percent of accuracy %(10 -100) Reference if possible 20. Whatisthebestwaytoremovedustdebrisandlooseparticleswhilespraying? (a) Usealongstand-off(spraydistance). (b) Useahighpreheattemperature. (c) Usedirectedcleandrycompressedairstreamstoblowawayparticles. (d) Sprayslowlyandatlowsprayrate. (e) Increasethepowderfeedrate. Answer is Percent of accuracy %(10 -100) Reference if possible 21. Whensectioningthermalsprayedtungstencarbidecoatingsitisimportanttominimizesurfacedamageintheformofhighplasticdeformation.Whattypeofcuttingtoolisusedforfineanddelicatespecimensectioning (a) Bandsaw (b) High-speedaluminumoxidegrindingwheel (c) Waterjetcutter (d) Alow-speeddiamondwheelcutter (e) Wireelectricaldischargemachining Answer is Percent of accuracy %(10 -100) Reference if possible 22. Whichofthefollowingfiguresbestdescribesthecorrectorientationwhensectioningthermalsprayed coated samples? (a) Figure1 (b) Figure2 (c) Figure3 (d) Figure4 (e) Noneoftheabove Figure1 Figure2 Figure3 Figure4 Figure12 Answer is Percent of accuracy %(10 -100) Reference if possible 23. Whatisthemainobjectiveofgrindingandpolishing? (a) Materialremoval (b) Inducescratchesonthematerial (c) Achievemirrorlikefinishonthesurface (d) Removematerialdefects (e) PreparethesampleforSEM (f) Removesoftphasesofacoating Answer is Percent of accuracy %(10 -100) Reference if possible 24. Sectionedthermalsprayedsamplescanbeembeddedinresintofacilitatetheirhandlingandtoimprovethepreparationresult.Specimensthatneedperfectedgeretentionorprotectionoflayersrequiremounting.Choosethecorrect2typesofmountingbelow (a) Coldmounting&Liquidmounting (b) Warmmounting&Gasmounting (c) Liquidmounting&Hotmounting (d) Hotmounting&Coldmounting (e) Gasmounting&Coldmounting Answer is Percent of accuracy %(10 -100) Reference if possible 25. Thetwotypesofresidualstressesthatcanbegeneratedinproducingathermallysprayedcoating.(Repeat2010) (a) Shearstressandtensilestress (b) Tensilestressanduniaxialstress (c) Shearstressanduniaxialstress (d) Compressivestressandshearstress (e) Tensilestressandcompressivestress Answer is Percent of accuracy %(10 -100) Reference if possible 26. Howmanylayers arethere iftheindividualsplatthickness is5µmandthetotalcoatingthicknessis0.5mm? (a) 1000layers (b) 100layers (c) 10000layers (d) 250layers (e) 2500layers Answer is Percent of accuracy %(10 -100) Reference if possible 27. Thetensilestrengthofplasmaandthermallysprayedcoatingsis: (a) Higherthanconventionalwroughtcastorforgedmaterials. (b) Approximatelyequaltoconventionalwroughtcastorforgedmaterials. (c) Muchlessthanconventionalwroughtcastorforgedmaterials. (d) Impossibletodetermine. (e) Noneoftheabove. Answer is Percent of accuracy %(10 -100) Reference if possible 28. Thestrengthofplasmaandthermallysprayedmaterialsisduetothephenomenonof:(Repeat2010) (a) VanderWaalsforcesbetweenparticles. (b) Metallurgicalbonding. (c) Phasetransformations. (d) Mechanicalinterlockingofparticleswitharoughenedsurface. (e) Noneoftheabove. Answer is Percent of accuracy %(10 -100) Reference if possible 29. RefertoFigure11.Iffailureoccursbetweenthebondcoatandsubstrateidentifythecorrectfailurelocusdescription. (a) Adhesiveceramic-bondcoatfailure. (b) Adhesivefailure. (c) Adhesivesubstrate-bondcoatfailure. (d) Cohesivebondcoatfailure. (e) Cohesivesubstrate-bondcoatfailure. Figure13 Answer is Percent of accuracy %(10 -100) Reference if possible 30. Ceramicthermalbarriercoatingsarebestsprayedbywhichmethod?(Repeat2010) (a) Plasmaspray (b) HVOF (c) Flame (d) Wire-arc (e) Coldspray Answer is Percent of accuracy %(10 -100) Reference if possible 31. Refertothebelow(Figure 13)andselectthemostappropriateresponsefromthosesupplied(Repeat2010) (a) Thepartofthefigurereferredtoas“A”indicatesthe“target”. (b) Thepartofthefigurereferredtoas“A”indicatesthe“ionflux”. (c) Thepartofthefigurereferredtoas“A”indicatesthe“plasma”. (d) Thepartofthefigurereferredtoas“A”indicatesthe“substrate”. (e) Thepartofthefigurereferredtoas“A”indicatesthe“anode”. Figure14 Answer is Percent of accuracy %(10 -100) Reference if possible 32. WhichofthefollowingstatementisincorrectwhenusingtheXPStechnique? (a) Identificationofallelements(excepthydrogenandhelium)presentintheouter100Åofasample (b) Non-monochromatedx-raysourcescanpossiblydamagesampleduringanalysis (c) Quantitative2Dchemicalmapsusingimaging-XPS. (d) Knowthesurfaceconcentrationsofelementspresent (e) Detectionofpositiveandnegativeionsuptomassesof10000Da Answer is Percent of accuracy %(10 -100) Reference if possible 33. ForimagingSIMstheprimaryionbeamwithalowernumberofionsperpulseisrasteredacrossthesurfaceandspectracollectedcalculatethetimerequiredforacquisitionofaimageSIMusingtheinformationprovidedbelow. (a) 20minutes (b) 2000minutes (c) 30minutes (d) 300minutes (e) 3000minutes Answer is Percent of accuracy %(10 -100) Reference if possible 34. Thebestmaterialthathasbeenidentifiedforpreventingproteinadsorptioninpolymer“brush”coatingsis: (a) poly(ethyleneglycol)(PEG) (b) n-heptylamine(HAPP) (c) allylamine(AAPP) (d) polyacylamide (e) poly(ethyleneterephthalate)(PET) Answer is Percent of accuracy %(10 -100) Reference if possible ****************************************************************************************** 1. AchemicalreactorfabricatedinInconel625requiresalocalizedcoatingofInconel625.Thetypeofcorrosionwhichisbeingpreventedis: (a) Heat-affectedzone. (b) Crevice. (c) High-temperatureoxidation. (d) Pitting. Answer is Percent of accuracy %(10 -100) Reference if possible 2. Aplasmasprayedcoatingofaluminawasappliedtoprotectequipmentagainsthotexhaustgasesattemperaturesupto1250°C(2280ºF).ProperbondcoatsandsubstratematerialswithclosematchedCTEswereusedyetthecoatingfailed afteronly3hoursinservice.Whatwasthemostlikelycause? (a) Usedcombustionwiretoapplythebondcoat. (b) Contaminatedaluminaceramic. (c) Rapidcorrosionofthesubstratebysulfides. (d) Gamma-to-alphaconversionofthealumina. Answer is Percent of accuracy %(10 -100) Reference if possible 3. Thesourceofvariancenotattributabletothetensiletestmethodis: (a) Alignmentofpullbars. (b) Thicknessofadhesivelayer. (c) Loadingrate. (d) Splat-to-splatcohesion. Answer is Percent of accuracy %(10 -100) Reference if possible 4. Thefigure44associatedwiththisquestionshowshowhardnessisrelatedtotherelativeabrasivewearresistance.Selectthemostappropriatealternativefromtheoptionsbelow. (a) Thewearresistanceofironwillalwaysbebetterthanthatofcopperunderallcircumstancesandconditions. (b) Thedataformolybdenumindicatesthatundertheconditionsofthistestarrangementitexhibitsgoodrelativeabrasionresistancecomparedtotheothermaterials. (c) There isa scientific relationship between hardness and relative abrasivewearresistance thatisbasedonwell-definedphysicalprinciples. (d) Thereisalwaysalinearrelationshipbetweenhardnessandrelativeabrasivewearresistance. (e) Hardnessisidenticalthemodulusofamaterialbecausetheengineeringdimensionsarethesame. Answer is Percent of accuracy %(10 -100) Reference if possible 5. Whichflatteneddroplet(showninthefigure35)bestdescribesimpactontoawellheatedpolishedsubstrate? Fig.35 Answer is Percent of accuracy %(10 -100) Reference if possible 6. Whichsecondarygaswouldbethemosteffectiveinensuringthatpowderismeltedinashorterdistance? (a) Nitrogen (b) Helium (c) Hydrogen (d) Oxygen Answer is Percent of accuracy %(10 -100) Reference if possible 7. Basedonyourknowledgeofparticlevelocitiesintheplasmawhatisthetypicaltraversetimeofaparticleinaplasma? (a) 10milliseconds (b) 1millisecond (c) 100milliseconds (d) 100nanoseconds Answer is Percent of accuracy %(10 -100) Reference if possible 8. Theparticlesizedistributionisanimportantmeasureinthermalspraytechnology.Awideparticlesizedistributionleadsto (a) Higherpowderflowability (b) Improveddepositionefficiency (c) Abroadparticletrajectory (d) Lessultrafines Answer is Percent of accuracy %(10 -100) Reference if possible 9. Whatmechanism canbeusedtoform chemicalbondingbetweenathermal-sprayedmetalandaceramicsubstrate? (a) Theoxygen-metaleutectic. (b) Scrubbingthesubstratewithhotgassespriortodeposition. (c) Usingmetaloxidebondcoats. (d) SiCgritblastthesubstratebeforedeposition. Answer is Percent of accuracy %(10 -100) Reference if possible 10. Thefigure45belowrepresentsthefollowing. (a) ThermalspraydepositionontothebottomofaJominybar. (b) Oilquenchingofashaftcomponent. (c) Atestthatwillallowhardnessprofilestobedetermined. (d) Surfacepreparationoftheendofasteelbar. (e) Extrusionofasteelbarthatneedstobecooled. Fig45 Answer is Percent of accuracy %(10 -100) Reference if possible 11. Givenastableandconsistentthermaljetsourcewhatisthenextmostimportantthermalsprayprocessparametertocontrol? (a) Spraydistanceandmotion (b) Powdercharacteristicsandfeed (c) Surfacepreparationandtreatment (d) Thesprayenvironment Answer is Percent of accuracy %(10 -100) Reference if possible 12. Acastironprintingcylinderwasrequiredtohaveafinishcoatingofausteniticstainlesssteelonitssurface.Thecastingsurfacewasfirstcleanedthenmachinedformacrorougheningthermallysprayedwithmolybdenumandthenfinishthermallysprayedwithstainlesssteel.Themolybdenumthermalspraycoatingistermed: (a) Abondcoating. (b) Masking (c) Preheating (d) Feathering. Answer is Percent of accuracy %(10 -100) Reference if possible 13. Duringstart-upofaplasmasprayprocessitisobservedthatpowderflowfromthepowderfeedtubeisveryirregularandithasbeenascertainedthattheproblemliesinthepowderdeliverysystem.Whichofthefollowingstatementsiscorrect? (a) Thepowdermorphologyisangularandthusthehallflowvalueisnotacceptableforathermalspraypowder. (b) Thepowdermustbewetandisthusagglomeratingwithinthepowderfeeder. (c) Itiscertainthatafluidized-bedfeederisbeingusedandthustheuseofarotatingwheelsystemwillalleviatethisproblem. (d) Theso-determinedpowderfeedingproblemisacomplextechnicaldifficultythatinvolvesmanyinterrelatedaspectsofthermalspraytechnology. Answer is Percent of accuracy %(10 -100) Reference if possible 14. Refertothefigure26belowthatderivesfromapatenttitled“AMethodofProducingBodiesandCoatings ofGlass andOther Substances”.Indicatethebest choicefromthestatementsprovidedbelow. (a) Thefigurerepresentsaprimitiveplasmaspraytechnology. (b) Thefigureshowshowliquidscanbeatomizedinavacuum. (c) ThefigureisrelatedtomodernhighvelocityoxygenfuelandD-guntechnology. (d) Thefiguredepictsamethodofatomizingasolidrod;theparticlesofwhicharethenblownagainstasubstratetoestablishacoating. (e) ThefigureisaprimitivemethodforthecreationofthinCVDcoatings. Answer is Percent of accuracy %(10 -100) Reference if possible Fig.26 15. Whichgascombinationismostcommonlyusedinpowderflamespraying? (a) Acetylene/oxygen (b) Hydrogen/oxygen (c) Propane/oxygen (d) Butane/oxygen Answer is Percent of accuracy %(10 -100) Reference if possible 16. Combustionflame-spraycoatingsoncetheindustrymainstayarenotascommerciallydominantaprocessnowbecause: (a) Ceramiccoatingscouldnotbesprayed. (b) Coatingporosityistoohigh. (c) Theprocessisnotastolerantofawiderangeofmaterialsasotherthermalsprayprocesses. (d) Theprocessisnoteconomicallycompetitive. Answer is Percent of accuracy %(10 -100) Reference if possible 17. Whichcoatingprocesscannotapplyoxide-ceramics? (a) Chemicalvapordeposition (b) Physicalvapordeposition (c) Thermalspray (d) Electroplating Answer is Percent of accuracy %(10 -100) Reference if possible 18. Whichisthehigh-temperaturephaseforlow-carbonsteel? (a) Cementite (b) Austenite (c) Martensite (d) Ferrite Answer is Percent of accuracy %(10 -100) Reference if possible 19. Refertothefigure6belowtoanswerthefollowingquestion.Thefigurerepresentstheiron-carbonphasediagram.Choosethemostappropriatealternativefromthelistbelow. (a) FieldAandFieldBareseparatedbythesolidusline. (b) FieldCrepresentsthecementitephase. (c) Pointbistheeutecticcomposition. (d) Pointbistheperitecticcomposition. (e) FieldDrepresentstheprecipitationofonlythegammaphase. (f) Noneoftheaboveiscorrect. Fig.6 Answer is Percent of accuracy %(10 -100) Reference if possible 20. Usetheunlabeledschematicphasediagram(fig.9).Selectthemostappropriatestatementfromthoseprovidedbelow. (a) The“A”regionrepresentsthe‘normalization’heattreatmentprocess. (b) The“A”regionrepresentsthe‘fullanneal’heattreatmentprocess. (c) The“B”regionrepresentsthe‘normalization’heattreatmentprocess. (d) The“C”regionrepresentsthe‘fullannealheattreatmentprocess. (e) AlternativesBandCarecorrect. Fig.9 Answer is Percent of accuracy %(10 -100) Reference if possible 21. The followingstatementsrefer toweldingprocesses. Whichoneofthesestatementsisconsideredasanadvantageofwelding? (a) Impossibletodissemblejointswithoutdestroyingdetailparts. (b) Jointsofexceptionalstructuralintegrityandefficiencywillnotaccidentlyloosenordissemble. (c) Unbalancedheatinputleadstodistortionorresidualstresses. (d) Heatofweldingdegradesbaseproperties. (e) Requiresconsiderableoperatorskill. Answer is Percent of accuracy %(10 -100) Reference if possible 22. Indicatethemostaccuratestatementofthosepresentedbelowasitrelatestohardfacing. (a) Hardfacingmustbecarriedoutundervacuumconditions. (b) Thesurfacefinishofaweldingprocessthatiscarriedouttohardfaceanengineeringcomponentisalwaysverysmooth. (c) Allmaterialsincludingceramicspolymersandcompositematerialscanbemanufacturedbymeansofahardfacingprocess. (d) Thehardfacingprocessisdefinedasanomni-directionalprocess. (e) Theadhesionofweldingandhardfacingprocessesisviaadiffusionalmechanism. (f) Aheataffectedzone(HAZ)isnotanartifactofahardfacingprocess. Answer is Percent of accuracy %(10 -100) Reference if possible 23. A processisrequiredtoimprovethewearresistanceandfatigueresistanceofsteel gears.Whatsurfacehardeningtreatmentwouldbemostappropriateforthisgear? (a) Carburizing (b) Carbo-nitriding (c) Flamehardening (d) Inductionhardening (e) Nitriding (f) Alloftheabove Answer is Percent of accuracy %(10 -100) Reference if possible 24. Thefigure1relatestophysicalintrinsicpropertiesofvariousmaterials.Parts(A)and(B)relatetotwodifferentproperties.Thehorizontalscalesareonlyindicatedforreferencepurposes.Choosethemostappropriatealternativefromthelistbelow. (a) Part(A)referstothetensilestrengthofthematerials. (b) Part(A)istheratioofthetensilestrengthtodensityofthematerials. (c) Part(B)referstothetensilestrengthofthematerials. (d) Part(B)istheratioofthetensilestrengthtodensityofthematerials. (e) Part(B)relatestotheabsoluteelectricalconductivityofthematerials. (f) Noneoftheaboveiscorrect. Fig:1 Answer is Percent of accuracy %(10 -100) Reference if possible 25. Thefigure2belowrelatesanormalizedpropertytobehaviouratvarioustemperatures.Choosethemostappropriatealternativefromthelistbelow. (a) Theverticalaxisisexpressedintermsof‘yieldpointtoweight’. (b) Therearenosuchmaterialsas‘CbandMobasedalloys’. (c) Theverticalaxisistheabsolutetensilestrength. (d) Theverticalaxisisthetensilestrengththathasbeennormalizedwithrespecttodensity. (e) The‘Tialloys’aremisrepresentedasarefunctionalatmuchhighertemperatures. (f) Theverticalaxisrepresentsathermalpropertysuchasexpansioncoefficient. Fig.2 Answer is Percent of accuracy %(10 -100) Reference if possible 26. Refertothefigure3belowandlookatthe‘???’identificationthatisindicatedfor‘TypeofMaterial3’.Choosethemostappropriatealternativefromthelistbelow. (a) ThismaterialismostprobablyacompositeorhybridmaterialbecausetheYoung’smodulusisverylarge. (b) MetalshavethegreatestYoung’smodulus;thusthismaterialismostprobablyahighalloytoolsteel. (c) ThismaterialiseithertungstencarbideordiamondsincetheseareknowntogreatYoung’sModulusvalues. (d) ThismaterialisacarbonfibrereinforcedmaterialthatissimilartoKevlar. (e) Thismaterialiseitheraluminiumoxideoranotherformofglass. (f) Itcanonlybedeterminedthatthismaterialsisanalloysinceonlysuchmaterialscanexhibitthebestextrinsicproperties. Fig.3 Answer is Percent of accuracy %(10 -100) Reference if possible

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