CWB (2026/2027) UPDATE|EXAM WITH
115 QUESTIONS WITH MULTIPLE
CHOICES |VERIFIED & REVISED
ANSWERS (NEW)!!!
1.Tommeasuremthemstrengthmofmamweldedmjointmwhatmmechanicalmtestmwouldmyoumprescribe?m
a)mAmtransversemweldmtensionmtestm
b)mAmcharpymtest.
m c)mAmCTODmtest.m
d)mAnmallmweldmmetalmtensionmtest.me)mAmsidembendmtest.m-
mCORRECTmANSWERma)mAmtransversemweldmtensionmtest
2.mSelectmthemcuttingmprocessmthatmwouldmprovidemthemnarrowestmheatmaffectedmzonemwhenmcutti
ngm12.5mmmm(0.5min)mthickmcarbonmsteel.
a)mOxy-acetylenemcutting.
m b)mAir-carbonmarcmcutting.m
c)mOxy-propanemcutting.
m d)mPlasmamarcmcutting.
m e)mLasermbeammcuttingm-mCORRECTmANSWERme)mLasermbeammcutting
3.mWhichmofmthemfollowingmrefersmtomamweldermtestmwheremampipemassemblymismplacedmverticallyma
ndmthemjointmweldedminmthemhorizontalmpositionmwithoutmrotatingmthemassembly?
a)m1Gm
b)m2G
m c)m3G
m d)m5G
m e)m6Gm-mCORRECTmANSWERmb)m2G
,4.mWhichmofmthemfollowingmimperfectionsmismnormallymconsideredmasmunacceptablemregardlessmof
msizemormlocation?
a)mPorosity.
b)mCrack.
c)mInadequatempenetration.
d)mLamination.
e)mBurn-through.m-mCORRECTmANSWERmb)mCrack.
5.mSelectmthemcorrectmpenetrametermthicknessmform2%msensitivitymwhenmradiographingmamweldme
ntm1m.25minchesminmthickness.
a)m0.012min.
m b)m0.015min.
m c)m0.025minm
d)m0.030min.m-mCORRECTmANSWERmc)m0.025min
6.mWhichmofmthemfollowingmstatementsmconcerningmporositymismtrue?
a)mPorositymcannotmbemtrappedmwithinmamweld.
b)mPorositymmovesmupmthroughmlatermpassesmandmwillmshowmonlyminmamfinalmpass.
m c)mPorositymismrestrictedmtomthemcentremlinemofmamweld.
d)mPorositymcanmresultmfrommfaultymweldermtechnique.
e)mPorositymcanmbemdissipatedmbymanmappropriatemheatmtreatment.m-
mCORRECTmANSWERmd)mPorositymcanmresultmfrommfaultymweldermtechnique.
7.mAnmirregular,mdensemwhitemspotmismseenmonmthemradiographmofmamweld.mAssumingmitmwasmcause
dmbymthemweldingmprocessmused,mwhichmonemofmthemprocessesmbelowmwouldmbemresponsible?
a)mSMAWmprocess.
,b)mGTAWmprocess.
c)mGMAWmprocess.m
d)mSTmprocess.
e)mESWmprocess.m-mCORRECTmANSWERmb)mGTAWmprocess.
8.mWhichmofmthemfollowingmoperationsmismknownmtomresultminmthememissionmofmionizingmradiationm
atmlevelsmdangerousmtomhumanmhealth?
A)mshieldmmetalmarcmwelding.
B)mPlasmamarcmwelding.
C)mOperationmofmhighmvoltagemportablemgeneratormsets.m
d)mRadiographicminspection.
e)mElectroslagmandmelectrogasmwelding.m-mCORRECTmANSWERmd)mRadiographicminspection.
9.mThemultrasonicmtransducermismpressedmagainstmthemplatemofmamweldedmjoint.mThemsoundmtravels
longitudinallymthroughmthemplatemtomthemoppositemside.mThemsignalmseenmonmthemUTmscreenmthatm
comesmfrommthismoppositemsidemofmthemplate:
a)mIsmtheminitialmpulsemsignal.
b)mIsmthembackmreflectionmsignal.
c)mIsmthemfrontmreflectionmsignal.m
d)mMustmbemequalminmamplitudemtomanymdefectmsignal.
e)mCannotmbemusedmformestablishingmthemthicknessmofmthemmaterialmundermtest.m-
mCORRECTmANSWERmb)mIsmthembackmreflectionmsignal.
11.mWhichmofmthemfollowingmismamstainlessmsteelmelectrode?
a)mE4918-1
b)mE4918-A1
c)mE4818m
, d)mE308-16m
e)mE4111m-mCORRECTmANSWERmd)mE308-16
12.mReversempolaritymrefersmtomthemusemofma:m
m a)mACmpowermsource,melectrodem+
m b)mDCmpowermsource,melectrode+
m c)mACmpowermsource,melectrode-
d)mDCmpowermsource,melectrode-m-mCORRECTmANSWERmb)mDCmpowermsource,melectrode+
13.mWhichmweldingmprocess(es)mcanmresultminmmetallicminclusionsminmthemweld?
m a)mSMAW.
m b)mFCAW.
m c)mGMAW.m
d)mGTAW
e)mSAWm-mCORRECTmANSWERmd)mGTAW
14.mInmproducingmamdrawingmformamscalemofm1:50,mwhatmwouldmbemthemdistancemrepresentedmbyma
mdistancemonmthemdrawingmofm6mem?
m a)m12mem.
m b)m30mem.
m c)m50mem.
m d)m240mem.
m e)m300mem.m-mCORRECTmANSWERme)m300mem.
15.mAsmamgeneralmrule,mweldmdiscontinuitiesmdetectedmbymultrasonicmtestingmaremacceptedmormreje
ctedmonmthembasismof:
m a)mVerticalmlinearity.
115 QUESTIONS WITH MULTIPLE
CHOICES |VERIFIED & REVISED
ANSWERS (NEW)!!!
1.Tommeasuremthemstrengthmofmamweldedmjointmwhatmmechanicalmtestmwouldmyoumprescribe?m
a)mAmtransversemweldmtensionmtestm
b)mAmcharpymtest.
m c)mAmCTODmtest.m
d)mAnmallmweldmmetalmtensionmtest.me)mAmsidembendmtest.m-
mCORRECTmANSWERma)mAmtransversemweldmtensionmtest
2.mSelectmthemcuttingmprocessmthatmwouldmprovidemthemnarrowestmheatmaffectedmzonemwhenmcutti
ngm12.5mmmm(0.5min)mthickmcarbonmsteel.
a)mOxy-acetylenemcutting.
m b)mAir-carbonmarcmcutting.m
c)mOxy-propanemcutting.
m d)mPlasmamarcmcutting.
m e)mLasermbeammcuttingm-mCORRECTmANSWERme)mLasermbeammcutting
3.mWhichmofmthemfollowingmrefersmtomamweldermtestmwheremampipemassemblymismplacedmverticallyma
ndmthemjointmweldedminmthemhorizontalmpositionmwithoutmrotatingmthemassembly?
a)m1Gm
b)m2G
m c)m3G
m d)m5G
m e)m6Gm-mCORRECTmANSWERmb)m2G
,4.mWhichmofmthemfollowingmimperfectionsmismnormallymconsideredmasmunacceptablemregardlessmof
msizemormlocation?
a)mPorosity.
b)mCrack.
c)mInadequatempenetration.
d)mLamination.
e)mBurn-through.m-mCORRECTmANSWERmb)mCrack.
5.mSelectmthemcorrectmpenetrametermthicknessmform2%msensitivitymwhenmradiographingmamweldme
ntm1m.25minchesminmthickness.
a)m0.012min.
m b)m0.015min.
m c)m0.025minm
d)m0.030min.m-mCORRECTmANSWERmc)m0.025min
6.mWhichmofmthemfollowingmstatementsmconcerningmporositymismtrue?
a)mPorositymcannotmbemtrappedmwithinmamweld.
b)mPorositymmovesmupmthroughmlatermpassesmandmwillmshowmonlyminmamfinalmpass.
m c)mPorositymismrestrictedmtomthemcentremlinemofmamweld.
d)mPorositymcanmresultmfrommfaultymweldermtechnique.
e)mPorositymcanmbemdissipatedmbymanmappropriatemheatmtreatment.m-
mCORRECTmANSWERmd)mPorositymcanmresultmfrommfaultymweldermtechnique.
7.mAnmirregular,mdensemwhitemspotmismseenmonmthemradiographmofmamweld.mAssumingmitmwasmcause
dmbymthemweldingmprocessmused,mwhichmonemofmthemprocessesmbelowmwouldmbemresponsible?
a)mSMAWmprocess.
,b)mGTAWmprocess.
c)mGMAWmprocess.m
d)mSTmprocess.
e)mESWmprocess.m-mCORRECTmANSWERmb)mGTAWmprocess.
8.mWhichmofmthemfollowingmoperationsmismknownmtomresultminmthememissionmofmionizingmradiationm
atmlevelsmdangerousmtomhumanmhealth?
A)mshieldmmetalmarcmwelding.
B)mPlasmamarcmwelding.
C)mOperationmofmhighmvoltagemportablemgeneratormsets.m
d)mRadiographicminspection.
e)mElectroslagmandmelectrogasmwelding.m-mCORRECTmANSWERmd)mRadiographicminspection.
9.mThemultrasonicmtransducermismpressedmagainstmthemplatemofmamweldedmjoint.mThemsoundmtravels
longitudinallymthroughmthemplatemtomthemoppositemside.mThemsignalmseenmonmthemUTmscreenmthatm
comesmfrommthismoppositemsidemofmthemplate:
a)mIsmtheminitialmpulsemsignal.
b)mIsmthembackmreflectionmsignal.
c)mIsmthemfrontmreflectionmsignal.m
d)mMustmbemequalminmamplitudemtomanymdefectmsignal.
e)mCannotmbemusedmformestablishingmthemthicknessmofmthemmaterialmundermtest.m-
mCORRECTmANSWERmb)mIsmthembackmreflectionmsignal.
11.mWhichmofmthemfollowingmismamstainlessmsteelmelectrode?
a)mE4918-1
b)mE4918-A1
c)mE4818m
, d)mE308-16m
e)mE4111m-mCORRECTmANSWERmd)mE308-16
12.mReversempolaritymrefersmtomthemusemofma:m
m a)mACmpowermsource,melectrodem+
m b)mDCmpowermsource,melectrode+
m c)mACmpowermsource,melectrode-
d)mDCmpowermsource,melectrode-m-mCORRECTmANSWERmb)mDCmpowermsource,melectrode+
13.mWhichmweldingmprocess(es)mcanmresultminmmetallicminclusionsminmthemweld?
m a)mSMAW.
m b)mFCAW.
m c)mGMAW.m
d)mGTAW
e)mSAWm-mCORRECTmANSWERmd)mGTAW
14.mInmproducingmamdrawingmformamscalemofm1:50,mwhatmwouldmbemthemdistancemrepresentedmbyma
mdistancemonmthemdrawingmofm6mem?
m a)m12mem.
m b)m30mem.
m c)m50mem.
m d)m240mem.
m e)m300mem.m-mCORRECTmANSWERme)m300mem.
15.mAsmamgeneralmrule,mweldmdiscontinuitiesmdetectedmbymultrasonicmtestingmaremacceptedmormreje
ctedmonmthembasismof:
m a)mVerticalmlinearity.
