CWB Level 2 Exam With 100% Correct
Answers 2025
To cmeasure cthe cstrength cof ca cwelded cjoint cwhat cmechanical ctest cwould cyou
cprescribe?
a) cA ctransverse cweld ctension ctest. c
b) cA ccharpy ctest.
c) cA cCTOD ctest.
d) cAn call cweld cmetal ctension ctest. c
e) cA cside cbend ctest. c- cCorrect cAnswer-a) cA ctransverse cweld ctension ctest.
Select cthe ccutting cprocess cthat cwould cprovide cthe cnarrowest cheat caffected czone
cwhen ccutting c12.5 cmm c(0.5 cin) cthick ccarbon csteel.
a) cOxy-acetylene ccutting. c
b) cAir-carbon carc ccutting. c
c) cOxy-propane ccutting. c
d) cPlasma carc ccutting.
e) cLaser cbeam ccutting c- cCorrect cAnswer-e) cLaser cbeam ccutting
Which cof cthe cfollowing crefers cto ca cwelder ctest cwhere ca cpipe cassembly cis cplaced
cvertically cand cthe cjoint cwelded cin cthe chorizontal cposition cwithout crotating cthe
cassembly?
a) c1G c
b) c2G c
c) c3G c
d) c5G c
e) c6G c- cCorrect cAnswer-b) c2G
Which cof cthe cfollowing cimperfections cis cnormally cconsidered cas cunacceptable
cregardless cof csize cor clocation?
a) cPorosity. c
b) cCrack.
c) cInadequate cpenetration.
, d) cLamination.
e) cBurn-through. c- cCorrect cAnswer-b) cCrack.
Select cthe ccorrect cpenetrameter cthickness cfor c2% csensitivity cwhen cradiographing ca
cweldment c1.25 cinches cin cthickness.
a) c0.012 cin. c
b) c0.015 cin. c
c) c0.025 cin. c
d) c0.030 cin. c- cCorrect cAnswer-c) c0.025 cin.
Which cof cthe cfollowing cstatements cconcerning cporosity cis ctrue?
a) cPorosity ccannot cbe ctrapped cwithin ca cweld.
b) cPorosity cmoves cup cthrough clater cpasses cand cwill cshow conly cin ca cfinal cpass. c
c) cPorosity cis crestricted cto cthe ccentre cline cof ca cweld.
d) cPorosity ccan cresult cfrom cfaulty cwelder ctechnique.
e) cPorosity ccan cbe cdissipated cby can cappropriate cheat ctreatment. c- cCorrect cAnswer-
d) cPorosity ccan cresult cfrom cfaulty cwelder ctechnique.
An cirregular, cdense cwhite cspot cis cseen con cthe cradiograph cof ca cweld. cAssuming cit
cwas ccaused cby cthe cwelding cprocess cused, cwhich cone cof cthe cprocesses cbelow
cwould cbe cresponsible?
a) cSMAW cprocess. c
b) cGTAW cprocess. c
c) cGMAW cprocess. c
d) cST cprocess.
e) cESW cprocess. c- cCorrect cAnswer-b) cGTAW cprocess.
Which cof cthe cfollowing coperations cis cknown cto cresult cin cthe cemission cof cionizing
cradiation cat clevels cdangerous cto chuman chealth?
a) cShielded cmetal carc cwelding. c
b) cPlasma carc cwelding.
c) cOperation cof chigh cvoltage cportable cgenerator csets.
d) cRadiographic cinspection.
e) cElectroslag cand celectrogas cwelding. c- cCorrect cAnswer-d) cRadiographic
cinspection.
The cultrasonic ctransducer cis cpressed cagainst cthe cplate cof ca cwelded cjoint. cThe
csound ctravels clongitudinally cthrough cthe cplate cto cthe copposite cside. cThe csignal
cseen con cthe cUT cscreen cthat ccomes cfrom cthis copposite cside cof cthe cplate:
a) cIs cthe cinitial cpulse csignal.
b) cIs cthe cback creflection csignal. c
Answers 2025
To cmeasure cthe cstrength cof ca cwelded cjoint cwhat cmechanical ctest cwould cyou
cprescribe?
a) cA ctransverse cweld ctension ctest. c
b) cA ccharpy ctest.
c) cA cCTOD ctest.
d) cAn call cweld cmetal ctension ctest. c
e) cA cside cbend ctest. c- cCorrect cAnswer-a) cA ctransverse cweld ctension ctest.
Select cthe ccutting cprocess cthat cwould cprovide cthe cnarrowest cheat caffected czone
cwhen ccutting c12.5 cmm c(0.5 cin) cthick ccarbon csteel.
a) cOxy-acetylene ccutting. c
b) cAir-carbon carc ccutting. c
c) cOxy-propane ccutting. c
d) cPlasma carc ccutting.
e) cLaser cbeam ccutting c- cCorrect cAnswer-e) cLaser cbeam ccutting
Which cof cthe cfollowing crefers cto ca cwelder ctest cwhere ca cpipe cassembly cis cplaced
cvertically cand cthe cjoint cwelded cin cthe chorizontal cposition cwithout crotating cthe
cassembly?
a) c1G c
b) c2G c
c) c3G c
d) c5G c
e) c6G c- cCorrect cAnswer-b) c2G
Which cof cthe cfollowing cimperfections cis cnormally cconsidered cas cunacceptable
cregardless cof csize cor clocation?
a) cPorosity. c
b) cCrack.
c) cInadequate cpenetration.
, d) cLamination.
e) cBurn-through. c- cCorrect cAnswer-b) cCrack.
Select cthe ccorrect cpenetrameter cthickness cfor c2% csensitivity cwhen cradiographing ca
cweldment c1.25 cinches cin cthickness.
a) c0.012 cin. c
b) c0.015 cin. c
c) c0.025 cin. c
d) c0.030 cin. c- cCorrect cAnswer-c) c0.025 cin.
Which cof cthe cfollowing cstatements cconcerning cporosity cis ctrue?
a) cPorosity ccannot cbe ctrapped cwithin ca cweld.
b) cPorosity cmoves cup cthrough clater cpasses cand cwill cshow conly cin ca cfinal cpass. c
c) cPorosity cis crestricted cto cthe ccentre cline cof ca cweld.
d) cPorosity ccan cresult cfrom cfaulty cwelder ctechnique.
e) cPorosity ccan cbe cdissipated cby can cappropriate cheat ctreatment. c- cCorrect cAnswer-
d) cPorosity ccan cresult cfrom cfaulty cwelder ctechnique.
An cirregular, cdense cwhite cspot cis cseen con cthe cradiograph cof ca cweld. cAssuming cit
cwas ccaused cby cthe cwelding cprocess cused, cwhich cone cof cthe cprocesses cbelow
cwould cbe cresponsible?
a) cSMAW cprocess. c
b) cGTAW cprocess. c
c) cGMAW cprocess. c
d) cST cprocess.
e) cESW cprocess. c- cCorrect cAnswer-b) cGTAW cprocess.
Which cof cthe cfollowing coperations cis cknown cto cresult cin cthe cemission cof cionizing
cradiation cat clevels cdangerous cto chuman chealth?
a) cShielded cmetal carc cwelding. c
b) cPlasma carc cwelding.
c) cOperation cof chigh cvoltage cportable cgenerator csets.
d) cRadiographic cinspection.
e) cElectroslag cand celectrogas cwelding. c- cCorrect cAnswer-d) cRadiographic
cinspection.
The cultrasonic ctransducer cis cpressed cagainst cthe cplate cof ca cwelded cjoint. cThe
csound ctravels clongitudinally cthrough cthe cplate cto cthe copposite cside. cThe csignal
cseen con cthe cUT cscreen cthat ccomes cfrom cthis copposite cside cof cthe cplate:
a) cIs cthe cinitial cpulse csignal.
b) cIs cthe cback creflection csignal. c
