AWS - CWI Model Question Foundamental - Part 1

8/10/2019 AWS - CWI Model Question Foundamental - Part 1

1/16

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.


2/16

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&GTA*'

e.Stud arc welding&SA*'


3/16

;. 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


4/16

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+


5/16

19.The s:etch a%(e shwsa.Air car%n arc cutting&4A4!A'

%.$+"uel gas cutting&F4'

c.Gas tungsten arc cutting&GTA*'

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


6/16

)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


7/16

)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


8/16

).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


9/16

/.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


10/16

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


11/16

/. 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&GTA*'e.Stud welding&S*'


12/16

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


13/16

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&GTA*'

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


14/16

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


15/16

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


16/16

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

Documents

AWS - CWI Model Question Foundamental - Part 1