PROCESSES AND EQUIPMENT
WITH QUESTIONS AND CORRECT
ANSWERS 2025-2026
MCAWfusesfaf________fpushf(forehand)ftechniquefforfoptimalfbeadfshapefandfappearance.f(Multi
plefchoice)
Questionf1foptions:
A)f10°ftof20°
B)f20°ftof30°
C)f5°ftof15°
D)f15°ftof30°f-fCORRECTfANSWERSA)f10°ftof20°
InfMCAW,fthefburningfoffthefwirefis______________dueftofthefdeoxidizersfandfarcfstabilizersfadde
dftofthefflux.f(Multiplefchoice)
Questionf2foptions:A)ffasterfandfhigherfinfdepositionfrates.B)funstablefandfundesirable.C)fhotterfa
ndfunpredictable.D)fcleanerfandfmorefstable.f-fCORRECTfANSWERSD)fcleanerfandfmorefstable.
MCAWfisfprimarilyfusedfforfproductionfweldingfofflow-carbonfsteel.f(True/False)f-
fCORRECTfANSWERSTrue
TheffunctionfoffthefingredientsfinfthefelectrodefcoatingfoffSMAWfelectrodesfisfto:f(Multiplefchoice)
,Questionf4foptions:A)fprovidefafgasfshield,fslagfcovering,farcfstabilization,fandfaddfadditionalfalloyi
ngfelements.B)freactfwithfthefbasefmetalftofassistfinfthefweldffusion.C)fremovefrust,fmillfscale,fandf
otherfcontaminantsffromfthefsurfacefoffthefjoint.D)fcounteractfthefeffectsfoffarcfblow.f-
fCORRECTfANSWERSA)fprovidefafgasfshield,fslagfcovering,farcfstabilization,fandfaddfadditionalfalloyi
ngfelements.
WhichfofftheffollowingfdoesfthefwelderfmanipulatefwhenfusingfthefSMAWfprocesses?f(Multiplefch
oice)
Questionf5foptions:A)fTheftemperaturefoffthefarc,fthefgasfmixture,fandfthefsizefofffluxfgranules.B)fT
hefcurrentfsetting,fthefspeedfofftravel,fthefarcflength,fandfthefelectrodefangle.C)fThefcurrentfsetting
,ftheftemperaturefoffthefarc,fthefarcflength,fandfthefelectrodefangleD)fThefvoltagefsetting,fthefspee
dfofftravel,fthefarcflength,fandfthefelectrodefangle.f-
fCORRECTfANSWERSB)fThefcurrentfsetting,fthefspeedfofftravel,fthefarcflength,fandfthefelectrodefang
le.
Howfmanyftimesfmayflow-hydrogenfSMAWfelectrodesfbefrebaked?f(Multiplefchoice)
Questionf6foptions:A)fOneftime.B)fTwoftimes.C)fThreeftimes.D)fFourftimes.f-
fCORRECTfANSWERSA)fOneftime.
ThefcomponentsfoffthefSMAWfsystemfare:f(Multiplefchoice)
Questionf7foptions:A)fCVfpowerfsupply,fweldingfgun,fgroundfcable,fandfexternalfshieldingfgas.B)fCV
fpowerfsupply,fweldingfgun,fandfgroundfcable.C)fCCfpowerfsupply,felectrodefholder,fandfgroundfcab
le.D)fCCfpowerfsupply,felectrodefholder,fgroundfcable,fandfexternalfshieldingfgas.f-
fCORRECTfANSWERSC)fCCfpowerfsupply,felectrodefholder,fandfgroundfcable.
Whatfdoftheffirstftwofdigitsfoffafshieldedfmetalfarcfweldingfelectrodefclassificationfindicate?f(Multi
plefchoice)
Questionf8foptions:A)fThefweldfdepositfstrength.B)fThefdepositionfratefoffthefelectrode.C)fThefyiel
dfstrengthfoffthefelectrode.D)fTheftypefoffelectrodefcoating.f-
fCORRECTfANSWERSA)fThefweldfdepositfstrength.
, EachfelectrodefforfSMAWfmustfbefimprintedfwithfitsfclassification.f(True/False)f-
fCORRECTfANSWERSTrue
Thefsubmergedfarcfweldingfprocess:f(Multiplefchoice)
Questionf10foptions:A)fcanfonlyfbefusedfwithfafconstantfvoltagefpowerfsupply.B)fcanfonlyfbefusedf
withfafconstantfcurrentfpowerfsupply.C)fcanfonlyfbefusedfwithfafconstantfcurrentfpowerfsupplyfwith
fhighffrequency.D)fcanfbefusedfwithfeitherfafconstantfvoltageforfafconstantfcurrentfpowerfsupply.f-
fCORRECTfANSWERSD)fcanfbefusedfwithfeitherfafconstantfvoltageforfafconstantfcurrentfpowerfsuppl
y.
ThefSAWffluxesfthatfsignificantlyfinfluencefthefcompositionfoffthefweldfmetalfthroughfslag/metalfre
actionsfarefcalled:f(Multiplefchoice)
Questionf11foptions:A)fFused.B)fBonded.C)fActive.D)fNeutral.f-fCORRECTfANSWERSC)fActive.
WhichfofftheffollowingfwouldfavoidfresultingfinfanfincreasefinfdepositionfratefwithfthefSAWfprocess
?f(Multiplefchoice)
Questionf12foptions:A)fAnfincreasedfcontactftip-to-
workfdistance.B)fThefusefofftandemfarc.C)fThefusefofftwinfwirefwithfsmallerfdiameterfwires.D)fThef
usefoffDCEP.f-fCORRECTfANSWERSD)fThefusefoffDCEP.
ThefSAWffluxesfare:f(Multiplefchoice)
Questionf13foptions:A)fclassifiedfonftheirfown.fTheyfhaveftheirfownfseparatefdesignation.B)fnotfcla
ssified.fOnlyfthefwirefisfclassified.C)fclassifiedfinfconjunctionfwithfthefweldingfwirefformingfanfelectr
ode/fluxfdesignation.D)fallfclassifiedfwithfEM12Kfwire.fThefusefoffotherfwiresfwouldfrequirefcompa
niesftofperformftestingftofverifyfdesiredfproperties.f-
fCORRECTfANSWERSC)fclassifiedfinfconjunctionfwithfthefweldingfwirefformingfanfelectrode/fluxfde
signation.
Flux-coredfwirefelectrodesfarefmorefexpensivefthanfgasfmetalfarcfelectrodes.f(True/False)f-
fCORRECTfANSWERStrue