CWB 1 QUESTIONS AND ANSWERS
1.0Which0is0not0a0recommended0method0for0surface0cleaning0of0a0part0for0liquid0penet
rant0examination?
a)0Cleaning0with0organic0solvents.
b)0Blasting0with0shot0or0dull0sand.
c)0Cleaning0with0de-greasers.
d)0Use0of0de-scaling0solutions.
e)0Ultrasonic0cleaning0methods.0-0ans✔b)0Blasting0with0shot0or0dull0sand.
2.0Which0of0the0following0weld0defects0is0most0likely0to0be0missed0by0radiography0in0a
0weld:
a)0Undercutting.
b)0Porosity.
c)0Slag0inclusions.
d)0Cracking.
e)0Burn0through0.0-0ans✔d)0Cracking.
3.0In0the0choices0given0below,0metallographic0tests0would0be0the0least0informative0wit
h0regard0to0the:
a)0Presence0of0the0non-metallic0inclusions.
b)0Grain0structure0in0the0weld0and0fusion0zone.
c)0Ability0of0the0material0to0withstand0repeated0fluctuating0loads.
d)0Extent0and0structure0of0the0heat0affected0zone.
e)0Number0of0weld0passes.0-
0ans✔c)0Ability0of0the0material0to0withstand0repeated0fluctuating0loads.
4.0In0producing0a0drawing0for0a0scale0of01:50,0what0would0be0the0distance0represente
d0by0a0distance0on
the0drawing0of060em?
a)0120cm.
b)0300cm.
c)0500cm.
d)02400cm.
e)03000cm.0-0ans✔e)03000cm.
,5.0The0mechanical0test0used0to0determine0the0ability0of0a0material0to0resist0failure0by0
brittle0fracture
requires0the0use0of:
a)0A0tensile0test0specimen.
b)0A0bend0test0specimen.
c)0A0compression0test0specimen.
d)0An0impact0test0specimen.
e)0A0spectrographic0test.0-0ans✔d)0An0impact0test0specimen.
6.0The0cooling0rate0of0aT-joint0is:
a)0Less0than0that0in0a0butt0joint.
b)0Greater0than0that0in0a0butt0joint.
c)0Greater0than0that0in0a0butt0joint0only0where0the0carbon0equivalent0is0high0.
d)0Greater0at0the0mid-section0than0at0the0start.
e)0Greater0at0the0mid-section0than0at0the0finish.0-
0ans✔b)0Greater0than0that0in0a0butt0joint.
7.0What0are0slag0and0non-metallic0inclusions0usually0caused0by?
a)0Moisture0in0the0weld0joint.
b)0High0welding0current.
c)0Loss0of0shielding0gas.
d)0Inadequate0interpass0cleaning.0-0ans✔d)0Inadequate0interpass0cleaning.
8.0Where0deviations0from0the0drawings0are0warranted0the0inspector0should0do0which0
of0the0following?
a)0Authorize0approval0of0the0changes.
b)0Obtain0official0approval0for0the0changes.
c)0Reject0the0work0without0any0further0consideration.
d)0Stop0the0work0until0drawing0revisions0have0been0completed.0-
0ans✔b)0Obtain0official0approval0for0the0changes.
9.0With0the0appropriate0electrode,0which0of0the0following0welding0processes0can0opera
te0with0or0without
a0shielding0gas:
a)0Electrogas0welding0process.
b)0Gas0metal0arc0welding0process.
c)0Flux0cored0arc0welding0process.
d)0Submerged0arc0welding0process.
e)0Pulsed0gas0metal0arc0welding0process.0-0ans✔c)0Flux0cored0arc0welding0process.
10.0If0there0is0inadequate0penetration0at0the0root0of0a0double0vee0groove,0which0of0the
0following
statements0best0defines0the0reason0for0this:
a)0Groove0angle0exceeds0specified0amount.
b)0Root0opening0too0large.
c)0Groove0depth0too0large0causing0melt0through0on0the0second0side
, d)0Groove0angle0is0too0small.
e)0Excessive0plate0thickness.0-0ans✔d)0Groove0angle0is0too0small
11.0The0continuous0method0of0magnetic0particle0inspection0means:
a)0Carrying0out0all0the0steps0in0the0process0without0pause.
b)0Using0DC0current.
c)0Applying0magnetic0particles0to0the0weld0while0the0current0is0flowing0in0the0yoke.
d)0Applying0magnetic0particle0to0the0test0surface0while0current0flows0from0one0leg0of0t
he0yoke
through0the0material0to0the0other0leg0of0the0yoke.
e)0Precautions0must0be0taken0to0prevent0over-magnetization0of0the0material.0-
0ans✔c)0Applying0magnetic0particles0to0the0weld0while0the0current0is0flowing0in0the0yo
ke.
12.0From0the0welding0problems0identified0below0which0one0of0the0five0does0not0fit0the0
pattern0established
by0the0other0four?
a)0Insufficient0throat.
b)0Incorrect0bevel0angle.
c)0Loss0of0shielding0gas.
d)0Improper0fit0up.
e)0Use0of0wrong0consumable.0-0ans✔a)0Insufficient0throat.
13.0A0100mm0fillet0weld0has0a0nominal:
a)0Throat0dimension0of0100mm.
b)0Area0of0100sq.0mm.
c)0Leg0size0of01000mm.
d)0Face0width0of0100mm.0-0ans✔c)0Leg0size0of01000mm.
14.0Which0welding0process0has0an0arc0drawn0between0the0workpiece0and0the0membe
r0being0welded0to
it?00
a)0SAW.
b)0CAW-G.
c)0PAW.
d)0EGW.
e)0SW.0-0ans✔e)0SW.
15.0When0performing0liquid0penetrant0examination,0excess0penetrant0removal0comes0
after0which0one0of
the0following0penetrant0steps:
a)0Application0of0developer.
b)0Application0of0penetrant
c)0Penetrant0dwell0time.
d)0Final0surface0cleaning.
e)0Drying0of0the0material0under0test.0-0ans✔c)0Penetrant0dwell0time
1.0Which0is0not0a0recommended0method0for0surface0cleaning0of0a0part0for0liquid0penet
rant0examination?
a)0Cleaning0with0organic0solvents.
b)0Blasting0with0shot0or0dull0sand.
c)0Cleaning0with0de-greasers.
d)0Use0of0de-scaling0solutions.
e)0Ultrasonic0cleaning0methods.0-0ans✔b)0Blasting0with0shot0or0dull0sand.
2.0Which0of0the0following0weld0defects0is0most0likely0to0be0missed0by0radiography0in0a
0weld:
a)0Undercutting.
b)0Porosity.
c)0Slag0inclusions.
d)0Cracking.
e)0Burn0through0.0-0ans✔d)0Cracking.
3.0In0the0choices0given0below,0metallographic0tests0would0be0the0least0informative0wit
h0regard0to0the:
a)0Presence0of0the0non-metallic0inclusions.
b)0Grain0structure0in0the0weld0and0fusion0zone.
c)0Ability0of0the0material0to0withstand0repeated0fluctuating0loads.
d)0Extent0and0structure0of0the0heat0affected0zone.
e)0Number0of0weld0passes.0-
0ans✔c)0Ability0of0the0material0to0withstand0repeated0fluctuating0loads.
4.0In0producing0a0drawing0for0a0scale0of01:50,0what0would0be0the0distance0represente
d0by0a0distance0on
the0drawing0of060em?
a)0120cm.
b)0300cm.
c)0500cm.
d)02400cm.
e)03000cm.0-0ans✔e)03000cm.
,5.0The0mechanical0test0used0to0determine0the0ability0of0a0material0to0resist0failure0by0
brittle0fracture
requires0the0use0of:
a)0A0tensile0test0specimen.
b)0A0bend0test0specimen.
c)0A0compression0test0specimen.
d)0An0impact0test0specimen.
e)0A0spectrographic0test.0-0ans✔d)0An0impact0test0specimen.
6.0The0cooling0rate0of0aT-joint0is:
a)0Less0than0that0in0a0butt0joint.
b)0Greater0than0that0in0a0butt0joint.
c)0Greater0than0that0in0a0butt0joint0only0where0the0carbon0equivalent0is0high0.
d)0Greater0at0the0mid-section0than0at0the0start.
e)0Greater0at0the0mid-section0than0at0the0finish.0-
0ans✔b)0Greater0than0that0in0a0butt0joint.
7.0What0are0slag0and0non-metallic0inclusions0usually0caused0by?
a)0Moisture0in0the0weld0joint.
b)0High0welding0current.
c)0Loss0of0shielding0gas.
d)0Inadequate0interpass0cleaning.0-0ans✔d)0Inadequate0interpass0cleaning.
8.0Where0deviations0from0the0drawings0are0warranted0the0inspector0should0do0which0
of0the0following?
a)0Authorize0approval0of0the0changes.
b)0Obtain0official0approval0for0the0changes.
c)0Reject0the0work0without0any0further0consideration.
d)0Stop0the0work0until0drawing0revisions0have0been0completed.0-
0ans✔b)0Obtain0official0approval0for0the0changes.
9.0With0the0appropriate0electrode,0which0of0the0following0welding0processes0can0opera
te0with0or0without
a0shielding0gas:
a)0Electrogas0welding0process.
b)0Gas0metal0arc0welding0process.
c)0Flux0cored0arc0welding0process.
d)0Submerged0arc0welding0process.
e)0Pulsed0gas0metal0arc0welding0process.0-0ans✔c)0Flux0cored0arc0welding0process.
10.0If0there0is0inadequate0penetration0at0the0root0of0a0double0vee0groove,0which0of0the
0following
statements0best0defines0the0reason0for0this:
a)0Groove0angle0exceeds0specified0amount.
b)0Root0opening0too0large.
c)0Groove0depth0too0large0causing0melt0through0on0the0second0side
, d)0Groove0angle0is0too0small.
e)0Excessive0plate0thickness.0-0ans✔d)0Groove0angle0is0too0small
11.0The0continuous0method0of0magnetic0particle0inspection0means:
a)0Carrying0out0all0the0steps0in0the0process0without0pause.
b)0Using0DC0current.
c)0Applying0magnetic0particles0to0the0weld0while0the0current0is0flowing0in0the0yoke.
d)0Applying0magnetic0particle0to0the0test0surface0while0current0flows0from0one0leg0of0t
he0yoke
through0the0material0to0the0other0leg0of0the0yoke.
e)0Precautions0must0be0taken0to0prevent0over-magnetization0of0the0material.0-
0ans✔c)0Applying0magnetic0particles0to0the0weld0while0the0current0is0flowing0in0the0yo
ke.
12.0From0the0welding0problems0identified0below0which0one0of0the0five0does0not0fit0the0
pattern0established
by0the0other0four?
a)0Insufficient0throat.
b)0Incorrect0bevel0angle.
c)0Loss0of0shielding0gas.
d)0Improper0fit0up.
e)0Use0of0wrong0consumable.0-0ans✔a)0Insufficient0throat.
13.0A0100mm0fillet0weld0has0a0nominal:
a)0Throat0dimension0of0100mm.
b)0Area0of0100sq.0mm.
c)0Leg0size0of01000mm.
d)0Face0width0of0100mm.0-0ans✔c)0Leg0size0of01000mm.
14.0Which0welding0process0has0an0arc0drawn0between0the0workpiece0and0the0membe
r0being0welded0to
it?00
a)0SAW.
b)0CAW-G.
c)0PAW.
d)0EGW.
e)0SW.0-0ans✔e)0SW.
15.0When0performing0liquid0penetrant0examination,0excess0penetrant0removal0comes0
after0which0one0of
the0following0penetrant0steps:
a)0Application0of0developer.
b)0Application0of0penetrant
c)0Penetrant0dwell0time.
d)0Final0surface0cleaning.
e)0Drying0of0the0material0under0test.0-0ans✔c)0Penetrant0dwell0time
