aws - cwi model question foundamental - part 1
TRANSCRIPT
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PART A
FUNDAMENTALS
1. Gas metal arc welding using shrt!circuiting trans"er #rduces...
a. E$cellent "usin
%.Dee# #enetratin
c.Greater melt "" rate
d. .&a' and&%' a%(e
e.Nne " the a%(e
). *hat *elding s+m%l a%(e re#resents the "llwing *eld ,int-
a. 1%. )
c.
d. /e. 0
. The mst e$tensi(el+ used weld ins#ectin methd isa. UT
%. RT
c. MT
d. Te. PT
/. *hat Shade "ilter #late &r e+e #rtectin' is needed when %ser(ing su%merged arcwelding at 12333 Am#s-
a. N.1/ Filter
%. N.1) Filterc. N 13. Filter
d. N ./ .Filter
e. 4lear sa"et+ gggles " sa"et+ glasses.
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0. *hich " the "llwing #rcess can %e used t ,in 5uenched and tem#ered steels-
a. SMA*%. SA*
c. GMA*
d. All " the a%(ee. 6 and c a%(e
7. The "igure a%(e illustrates
a. 6end s#ecimen
%. Tensile s#ecimenc. 8m#act s#ecimen
d. Macr s#ecimen
e. Dr# weight s#ecimen
9. The s:etch a%(e shws
a. shielded metal arc welding &SMA*'
%.Flu$ cre arc welding&F4A*'c.Electr slag welding&ES*'
d.Gas tungsten arc welding>A*'
e.Stud arc welding&SA*'
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;. A s#eci"icatin uses the term accrding t A.32 standard welding terms
and de"initins2 it is a nn standard term that is re"erring t aa. Putt+ weld
%.seal weld
c.slugged weldd.a weld c(ered with caul:ing #utt+
e.&a' and ?r &d'@
. Fr heat treata%le lw all+ steels2 the minimum #reheat and inter#ass tem#erature
re5uired crac:ing de#ends n
a. A(aila%le h+drgen during welding
%. cnditin " heat treatment
c. 8ts car%n and all+ cntentd. all " the a%(e
e. letters &%' and &c' a%(e
13. *hich welding s+m%l a%(e re#resents the weld ,int-
a.1%.)
c.
d./e.0
11. The a%(e s+m%l indicates
a. Du%le!"lare!(!gr(e weld2 ultrasnic test either side in "ield%.Du%le!"lare!%e(el!gr(e weld2 ultrasnic test %th sides in "ield
c. .Du%le!%e(el!gr(e weld2 ultrasnic test either side in "ield
d.Du%le!!gr(e weld2 ultrasnic test either Side in "ielde.nne " the a%(e
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Fr 5uestin 1) thrugh 17 stud+ the illustratin %elw.
1).Fr the "illet weld a%(e BDimensin C1 designates the
a.theretical thrat%.e""ecti(e thrat
c.actual thrat
d.cn(e$it+e.sie " weld
1.Dimensin C) designates the
a.cn(e$it+
%.sie " weldc. .theretical thrat
d. actual thrate. e""ecti(e thrat
1/. Dimensin C designates thea. e""ecti(e thrat
%. cn(e$it+
c.Penetratind.theretical thrat
e. actual thrat
10. Dimensin C/ designates the
a.Penetratin
%.(erla#c.undercut
d. cn(e$it+
e.cnca(it+
17. Dimensin C0 designates the
a. sie " weld
%.(erla#c.undercut
d. cn(e$it+
e.cnca(it+
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19.The s:etch a%(e shwsa.Air car%n arc cutting&4A4!A'
%.$+"uel gas cutting&F4'
c.Gas tungsten arc cutting>A*'
d.Mechanical cuttinge.Plasma arc cutting&PA4'
1;.The test which uses the s#ecimen illustrated a%(e isa.All!weld metal tensile
%.Macrtech
c.im#actd.6end
e.Nne " the a%(e
1.6ac: ste# se5uence welding is "ten useda. "r ease " #eratin
%. "r tac:ing the welded metal
c. t s#eed u# weldingd .t reduce distrtin
e. t #re(ent crater crac:s
)3.A /0 degree angle is a%ut
a. 9;.0 rad
%.9.;90 rad
c.1.9/0 radd.3.9;90 rad
e.3.39;90 rad
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)1. .;/ millimeter #er secnd e5uals hw man+ inches #er minute -a.9
%.9.0
c.;d.;.0
e.
)). 0).70 MPa e5uals hw man+ #unds #er s5uare inch-
a.90333
%.90)03
c.90033
d.90903e.97333
). 733 degree F runds t
a.111) c
%.13)) cc./3 c
d. c
e.17 c
)/. 03 #unds "rce is
a.1)). N%.))).0 Nc.))./ N
d.//.0 N
e.3.)) N
)0. ).0 L#s e5uals hw man+ newtns-
a.11303%.11133
c.111)0
d.11103
e.11190
)7. 10 #unds mass e5uals hw man+ :ilgrams-
a.0.;1%.7
c.7.0
d.7.;1e.9.1
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)9. A standard all weld metal tensile s#ecimen is shwn a%(e.the ultimate strength
&UTS' " this s#ecimen ma+ %e determined as "llwsB
Assuming the s#ecimen "ails at an ultimate lad " 1)333 #unds2what is thea##r$imate tensile strength " MPa-
a./)133 MPa%./)13 MPa
c./)1 MPa
d./).1 MPae./.)1 MPa
STUDH TIE 6EL* 8LLUSTRAT8N METIDS F MAGNET84 PART84LE
8NSPE4T8N *8TI D8RE4T 4URRENT
); .8" the #rds shwn in methd C)are #laced n the "ace &a$is ' " a gr(e weld 2which
" the "laws wuld cause the clearest indicatin-
a.trans(erse sur"ace crac:
%.lac: " "usin n the rtc.A #late laminatin
d.A lngitudinal sur"ace crac:
e.Tungsten inclusin
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).which " the a%(e s+m%ls as listed in the curret A)./ 2standard s+m%ls "r
welding.2%raing2 and nndestructi(e e$aminatin 2is used t indicate "ield weld-a.1
%.)
c.
d./
e.Field welds are nt shwn n the drawings.
3.Sensitiatin " stainless steel #rimaril+ re"ers t its lss "a.Strength
%.Tughness
c.Ductilit+d.4rrsin resistance
e.8m#act resistance.
1.The %ase metal ne$t t the weld that has %een heated t a su""icientl+ high tem#erature
t cause a change in micrstructure is the
a.Tem#ered Jne%.Ieat!a""ected nec.Untem#ered ne
d.Pearlite area
e.6ase #late
).Electrical haards are
a.Present in electric arc welders%.Present in secndar+ leads
c.minimied %+ #r#er e5ui#ment installatin
d.mre se(ere in the #resence " water r misture
e.all " the a%(e
.8ns#ectin recrds shuld
a.6e in as much as detail as necessar+%.8nclude e$#lanatin " re#airs
c.State hw the wr: sta+ed within #rescri%ed tlerances
d.All " the a%(ee. 6 and 4 a%(e
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/.8ncm#lete "usin can %e caused %+
a.Mlten metal "lding ahead " the arc%.8nsu""icient heat in#ut
c.Pr#er ,int design
d.An+ " the a%(ee. A and 6 a%(e
0.what welding s+m%l a%(e re#resents the "llwing weld ,int-
a.1%.)
c.
d./e.0
7.6raed ,ints can %e destructi(el+ tested %+ which " the "llwing testing methds-
a.Metallgra#hic%.Peel
c.Tensin
d.All " the a%(ee.Nne " the a%(e
9.A 4*8 shall ha(e the res#nsi%ilit+ " (eri"+ing dcumentatin " the "llwing
a.recrds " welder 5uali"icatins%.recrds " tac:er 5uali"icatins
c.recrds " *elding #eratr 5uali"icatins
. d.recrds " *elding Prcedure 5uali"icatinse.all " the a%(e
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STUDH TIE 8LLUSTRAT8N 6EL*
;.An ultrasnic test " a #late shws a trace n the 4RT with #ea:s as shwn a%(e2i"
the swee# is "rm le"t t right 2the #ea: at &)' ma+ indicate
a. A "law at the sur"ace%. A "law near the center
c. A re"lectin "rm the %ac:
d. A "laws at the %ac:e.there is n "law indicated n the trace
.which " the "llwing smetimes used t cntrl distrtin in a weldment-
a.Peening
%.Preheatingc.Fi$tures and stress relie"
d.6ac:ste# weldinge.All " the a%(e
/3.An un%r:en tensile s#ecimen has a thic:ness " .0 inch and a width " .9inch.*hat is the crss sectinal area in s5uare inches-
a..
%. ./3c../1
d../
e..//
/1.(ere$#sure t K!ra+s r gamma ra+s ma+ cause damage t human
a.se$ual rgans
%.%ld tissuec.s:in
d.internal rgans
e.all " the a%(e
FR UEST8NS /) TIRUGI /7
The weld in the %utt ,int a%(e
/) .N.1 indicates the
a.6eads%.weld rt
c.weld te
d."ace rein"rcemente.weld "ace
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/. N.) indicates the
a.6eads%.weld rt
c.weld te
d."ace rein"rcemente.weld "ace
//. N.indicates thea.6eads
%.weld rt
c.weld te
d."ace rein"rcement
e.weld "ace
/0. N./ indicates thea.6eads
%.weld rt
c.weld ted."ace rein"rcement
e.weld "ace
/7. N.0 indicates the
a.%eads
%.weld rtc.weld ted."ace rein"rcement
e.weld "ace
STUDH TIE 8LLUSTRAT8N 6EL*
/9.The s:etch a%(e shws a test #rcedure "ra. shielded metal arc welding&SMA*'
%.Gas metal arc welding&GMA*'
c.Electr slag welding&ES*'
d.Gas tungsten arc welding>A*'e.Stud welding&S*'
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STUDH TIE DES8RED *ELD SHM6LS 6EL*
/;.8denti"+ the crrect welding s+m%l "r the desired welda.A
%.6
c.4d.D
e.E
/.when welds are ging t %e hidden r inaccessi%le "r ins#ectin in a "inished
weldment r structure2the+ shuld %e ins#ected
a.%+ %resc#ic methds t #r(ide access t the hidden welds%.a"ter #stweld treatment " the cm#leted weldment " structurec.%e"re start " the welding
d.during the #rgress " assem%l+ as welds are cm#leted
e.a"ter cm#letin " the wr:
03.The s+m%l a%(e shws the cn"iguratin "
a.U!gr(e weld%.%e(el!gr(e weld
c.!Gr(e weld
d."illet weld
e."lare!!Gr(e weld
01.Iardness " the %ase metals can %e a""ected %+ which " the "llwing cnditins-
a.heat treatment%.cld2wr:ing " the metal
c.cm#sitin " the %ase and weld metal
d.metllugical e""ects " welding #rcesse.ll " the a%(e
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0).8n %rae welding2"lu$ ma+ %e a##lied %+ which " the "llwing methds-
a.using "iller rd #re!cated with "ills%.intrducing "lu$ thrugh $+"uel gas "lame
c.%rushing the "lu$ n the ,int #rir t %raing
d.all " the a%(ee.A r 4 a%(e
0 .Pic: the welding #rcess %eat illustrated %+ the a%(e s:etch
a. shielded metal arc welding&SMA*'
%.Gas metal arc welding&GMA*'
c.Gas tungsten arc welding>A*'
d.Su%merged arc welding&SA*'e.Plasma arc cutting&PA*'
0/.which " the "llwing ma+ an ins#ectr use t #er"rm (isual ins#ectin-
a.magni"ier
%.micrmeterc."illet weld gauge
d.all " the a%(e
e.6 and 4 a%(e
00.The welding ins#ectr must (eri"+ that
a. all recrds are cm#leted %+ the time hardware is shi##ed e(en thugh the+ ma+nt ha(e %een cm#leted at the end " #eratins%. recrds " 5uali"icatins2certi"icatin2"a%ricatin and testing are cm#leted and
that the+ meet a##r#riate cde and?r s#eci"icatin re5uirements
s#eci"ied "r the ,%c. all the general #ints are c(ered in ins#ectin recrds2since detail is ne(er
allwed in such re#rts
d. the hardware was cm#leted and that the sh# #rmises t cm#lete the recrds%e"re shi#ment.
e. that the 5ualit+ manual meets the a##r#riate 5ualit+ s+stem natinal r
internatinal standard "r welding such as 8S 333 r GS 333
FR UEST8NS 07 TIRUGI 0 4NS8DER TIE *ELD8NG SHM6LS
6EL*
07.A weld which e$tends all arund the ,int is shwn at num%er
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a.
%./c.9
d.
e.;09.An intermittent "illet is shwn as num%er
a.1
%.c./
d.9
e.7
0;.A #lug weld indicating de#th " "ill is shwn as num%er
a.7%.
c.9d.0
e.;
0.A gr(e weld with melt!thrugh is shwn at num%era.)
%.9
c.7d.
e.13
FR UEST8NS 73 T 7) STUDH TIE 8LLUSTRAT8N 6EL*B
73.The #r"ile " the "illet weld a%(e shws a "law at n.1 is :nwn as
a.a wagn trac:
%.a te crac:c.underla#
d.undercut
e.under%ead crac:ing
71. The "illet weld a%(e shws a "law at N.) is :nwn as
a.(erla#
%.a te crac:c.(er"ill
d.undercut
e.te laminatin
7). The "illet weld a%(e shws a de"ect at N. is :nwn as
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a.macr"issure
%.incm#lete "usinc.#i#ing #rsit+
d.undercut
e.an under%ead crac:
7. A 4*8 shall %e "amiliar with and understand the "undamentals "
a.SMA*%.F4A*
c.GMA*
d.GTA*
e.all " the a%(e
7/. A single wiresu%mereged arc welding machine is #erated at 73 inches #er minute.*hat is the heat energ+ in#ut "O.
Ieat in#ut &,ules #er inch' am#s $ (lts$ 73Tra(el s#eed
a. )2/33 ,ules #er inch
%. 1210)2333 ,ules #er inchc. 12//2333 ,ules #er inch
d. 1132333 ,ules #er inch
e. 1/2/33 ,lus #er inch
70. The rate " cling in a weld %ead is slwed %+O
a. Decreasing the heat in#ut #er inch " weld%. Preheating the weldmentc. Reducing the electrde sie
d. 8ncreasing the tra(el s#eed
e. 8ncreasing the am#earage and tra(el s#eed #r#rtinall+
77. The "illet weld%rea: test is used t e(alu(ate the
a. ualit+ " the "ractured weld metal%. 4m#ressing strength " the weld ,int
c. Ductilit+ " weld metal
d. *eldQs resistance t lamellar tearing
e. 8m#act strength " the weld ,int79. De#ending n the cause 2 slag entra#ment ma+ %e crrected %+O
a. 4hanging the electrde r "lu$
%. Thrugh slag rem(al %etween the #assesc. Pr#er #sitining " the ,int
d. All " the a%(e
e. 6 and 4 " a%(e
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7;. 8ns#ectin re#rt shuld %e OO..
a. 4learl+ written%. 4ntain all re5uired in"rmatin
c. Readil+ accessi%le
d. All " the a%(ee. A and 6 " A%(e
Fr 5uestins 7 t 912 Stud+ the illustratin gi(en %elw
7. The weld in the "igure N 1 a%(e is said t %e welden in the B
a. Flat #sitin
%. Irintal #sitin
c. ertical #sitind. (erhead #sitin
e. Nne " the a%(e
93. The weld in the "igure N )B a%(e is said t %e welded in the
a. Flat #sitin%. Irintal #sitin
c. ertical #sitin
d. (erhead #sitine. Nne " the a%(e
91. The weld in the "igure N B a%(e is said t %e welded in thea. Flat #sitin%. Irintal #sitin
c. ertical #sitin
d. (erhead #sitine. Nne " the a%(e