cswip question

7/28/2019 cswip question

1/9

QuestionExcerptFromCSWIP3.1 PART4Q.1)whatis the arc enegyfor the followingweldingprocessparameters?

A.

0.7

KJ/m

m

B.0.6KJ/m

m

C.0.01K

J/mm

D.

0.7K

J/m

m

Q.2)In an all weldmetaltensiletest, the originaltest specimensgaugelengthof 50mmafter testingthe gaugeincreasedto 72mm,whatis the elongation

percentage?

A.

4

4

%

B.

1

4

4

%

C.

6

9

.

4

%

D.

2

.

2

7%

E.The elongation is not normally tested in

this test

Q.3)Whatis the ratio betweenthe leg lengthanddesignthroatthicknesson mitrefillet weldwith equalleg lengths?

A.

1

t

o

1

B.

2

t

o

1

C.

1.41

4 to

1

D.All of the above it depend upon the leg

length size

Q.4)Thetoughnessand yield strengthof steel is reducedby:

A.Reducing the

grain size

B.Increasing the heat

input


2/9

C.Reducing the heat

input

D.both a

and b

Q.5)Whichof the followingstatmentsis trueif applicableto a charpyveenotchimpacttest?

A. It's destructive test used to assess material ductility in the weldzone

B.It's a mechanical test used to determine a welds resistance to

creep

C.It's destructive test, which is used to give a measure of notch

toughness

D.It's a static test used to determine material toughness in the notch

region

E.both a

and c

Q.6)Hawcanyoutell the diffrencebetweenan EN/ISOweldsymboland a BSweldsymbol?

A.The EN/ISO weld symbol will always have the arrow side weld at the top of the

reference line

B.The EN/ISO weld symbol has the welds elementary symbol placed on a dached line lying above or below the solid

reference line to indicate a weld on the other side

C.The EN/ISO weld symbol has a fillet weld leg length identified by the

letter "a"

D.The EN/ISO weld symbol has a fillet weld throat thickness identified by the

letter "z"

E.both b

and d

Q.7)Whatis the possibleeffectof havingthe heat inputtoo lowduringwelding?

A.Low toughness,entrapped hydrogen and low

hardness

B. High hardness,lack of fusion and entrappedhydrogen

C.Entrapped hydrogen ,low toughness and high

ductility

D.Lack of fusion ,low toughness and reduction in

ductility

Q.8)An MMAelectrodeclassifiedas E7018is :

A.A basic low hydrogen electrode containing iron

powder

B.A rutile electrode containing iron

powder

C.A cellulose electrode suitable for welding in all

positions

D.A basic electrode depositing weld metal with yield strength af a least

70,000 psi

E.Both a

and d

Q.9)The number135 is placedat the end of the referenceline on a weldsymbol.accordingto ISO 2553what doesnumberindicate?

A.The welding process is stated as

MMA

B.The welding process is stated

as TIG

C.The welding process is stated as

SAW

D. NDT is to e carried out afterwelding

E. None of the


3/9

above

Q.10)Wichof the followingis the mostlikely to be consideredan essential variablefor a weldequalificationtest?

A.A change from an electrode classified to BS EN 499 as an E46 3 INI B to an electrode classified to AWS A5.1 as an

E7018

B.A change of pipe wall thickness by at least

15 mm

C.A change in pre-heat temperature from 50C to

100C

D.A change from PC welding position to PA welding

position

E.all of the

above

Q.11)Whatwouldbe a typical appearanceof a dutile fracturesurface?

A.Rough randomly torn and a reduction

in area

B.Smooth fracture surface displaying beach

marks

C. Step likeappearance

D.Bright crystalline fracture with very little reduction

in area

E.Both a

and b

Q.12)Wihichof the followingundertypical conditionsusingthe MMAweldingprocesswouldgive the deepestpenetration?

A.

D

C

-

v

e

B.

DC

+

v

e

C.A

C

D.Both a

and b

Q.13)The inclusionthe rate an inductancein the weldingcircuit whenusingMIG/MAGweldingprocessis to :

A.control the rate of spatter in the dip transfer

mode

B. it enable the welder to weld in position with the spray transfermode

C.it allows for thicker filler wires to be used(2.6-3.6mm

diameter)

D.it allow full control over droplet size in the spray transfer

mode

Q.14)An undesirablepropertyof aluminiumoxideresidue,whenweldingis that it:

A.decreases weld pool

fluidity

B.requires more heat to melt it when compared to

aluminium

C.Causes the welder to travel to

quickly

D.The presence of the oxide makes aluminium impossible to

weld


4/9

Q.15)Whenweldingwith the MIGweldingprocessusingpure argonas the sheildinggas on carbonsteel ,whichof the following

problemsare likely to occur?

A.Copper inclusion and excessive cap

heights

B.Excessive root penetration and

porosity

C.Slag inclusion and

crater pipe

D.Lack of fusion and poor cap

profiles

Q.16)Whenconsideringthe tungstenarc weldingprocesswhatis the purposeof the down-slope(slope-out)control?

A.Ensure good

penetration

B.To prevent the arc striking on the parent

material

C.To help prevent the formation of crater pipe and possible

cracking

D. To help prevent tungstan inclusion duringwelding

Q.17)Whenconsideringthermalcuttinglocal hardeningcan be reducedby:

A.Increasing the cutting

speed

B.The use propane as a

fuel gas

C.Pre heating the material to

be cut

D.all of the

above

Q.18)In a sami-automaticwldingprocess,whichof the followingshieldinggas/gasmixtureswouldnormallygive the deepest

penetrationon steel?

A.100%

argon

B.100%

CO2

C.75% argon +25%

CO2

D.All of the above would give the same depth in

penetration

Q.19)In a MMAweldigprocess,whichof followingstatmentsare false?

A.An arc gap,which remains almost constant even if as usual the welder varies the position of the

electrode

B.A voltage ,which remains almost constan even if as usual the welder ,varies the

arc gap

C.A current ,which remains almost constan even if as usual the welder ,varies the

arc gap

D.

a

a

n

d

b

E.All of the

above

Q.20)Whenconsideringthe MIG/MAGweldingprocesswhichof the followingmetal transfermodeswouldbe the best suitedto the

weldingof thick platesover25mm,flatweldingposition:

A. Dip


5/9

transf

er

B.Pulse

transfer

C.Spray

transfer

D. globulartransfer

Q.21)Whichof the followingcurrenttypeswouldyou expectto be usedfor the weldingof aluminiumwith the TIGweldingprocess?

A.

D

C

-

v

e

B.

D

C

+

v

e

C.A

C

D.All of the

above

Q.22)Whenconsideringhydrogen,whichof the followingweldingprocesswouldproducethe lowestlevelsin the completedweld

(undercontrolledconditions)?

A.

M

M

A

B.

S

A

W

C.

T

I

G

D.

F

C

AW

Q.23)Pre heat prior to the weldingof a carbonsteel but weld:

A.Must always be

carried out

B.Is always carried out using a gas

flame

C.Need not be carried out if post weld heat treatment is to

follow

D.None of the

above

Q.24)In steel the elementwith the greatesteffect on hardnessis :

A. Chro

miu


6/9

m

B.Mang

anese

C.

C

ar

b

on

D.

N

i

c

k

e

l

Q.25)For a givenvoltageand currentsettingon a MMAweldingplant, whenthe arc lengthis shortend, whichof the will be most

affected?

A.The current will

increase

B. The current willdecrease

C.The voltage will

decrease

D.The voltage will

increase

Q.26)Whichof the followingbest describesa sami-autimaticweldingprocess?

A.The welder is responsible for the maintaining the arc gap and travel

speed

B.The welder is responsible for travel speed only;arc gap is kept constant by the welding

plant

C.Both travel speed and arc gap is controlled by the welding

plant

D.All of

above

Q.27)Whatis purposeof rectifierin weldingsets electricalcircuit?

A.To keep the arc stable when using low current

settings

B.To convert AC current to DC

current

C.To convert DC current to AC

current

D.To initiate arc at

start up

Q.28)Whencalibratinga mechanisedMAGweldingplant ,whichof the followingapplies(WFS=wirefeedspeed)?

A.Check- WFS,current ,volts and wire

diameter

B.Check- WFS,joint set-up ,gas flow rate and

WFS

C.Check- gas flow rate,stick out length,WFS and

current

D.All of the

above

Q.29)The mainusageof the arc air processis :

A.The cutting of a weld

preparation

B.The removal of defective

weld


7/9

C.For the cutting of non-ferrous

materials only

D.For the cutting of ferrous

materials only

Q.30)Whichof followingfillet weldedtee jointswouldhavethe highestresistanceto fatiguefractures,assumingmaterial,welding

process,filler material to be the same?

A.A convex fillet weld throat thickness

8mm

B.A mitre fillet weld throat thickness

8mm

C.A concave fillet weld throat thickness

6mm

D.Both a and b (throat thicknesses dimension the

same)

Q.31)YounoticeTIG weldingbeingcarriedout usingMMAelectrodestripedof flux beingusedas filler wires.you wouldcertainly

reportthis issueand file a non-conformancereport.whatwouldthe mainresonwhy?

A.Because of the additional cost

incurred

B.The wire would have been too

thick

C.Weld metals composition would be

incorrect

D.The welder would not be

qualified

Q.32)The mainreasonfor grindingthe cappingpassesflushis:

A.To increase

fatigue life

B.To increase the chances of fatigue

cracking

C. To improve visualappearance

D.To reduce the components

weight

Q.33)Duplexstainlesssteel can be somtimesreferredto as:

A.Martensitic stainless

steel

B.Ferritic/austenitic stainless

steel

C.316L stainless

steel

D.All of the

aboveQ.34)Weldcenterline longitudinalcracksin weldedbutt jointsmayhaveresultedfromwhichof the following?

A.solidification

problems

B.Hydrogen

entrapment

C.

poor

welder

skill

D.Both a

and b

Q.35)whichof followingwouldbe considereda typical heat input readingwith the MIG/MAGweldingprocess?

A. 1.2K

J/m


8/9

m

B.

12K

J/m

m

C.

1.2

Joules

/mm

D.

6.5

KJ/m

m

Q.36)Duringthe visual inspectionof a fillet weldwith evenlengthsof 15mm.thethroatthicknessis measuredat 8.5mm,whatis the

fillet weldsprofile?

A.

C

o

nv

ex

B.

M

i

tr

e

C.

Co

nca

ve

D.Both a

and b

Q.37)whichof followingweldingparametersare the most difficult to control duringthe weldingoperationusinga

manualarc weldingprocess?

A.Travel

speed

B.

V

olt

a

g

e

C.

C

ur

re

nt

D.

Arc

lengt

h

Q.38)Youare the only weldinginspectionon a crosscountrygas supplypiplineproject.whichof the followingwelding/fabricationstageswouldyou considerthe mostimportantstagefor yourclosestscrutiny?

A.Fit-up and root pass

welding

B.Post weld

cleaning

C.Fillers and capping pass

welding

D.radiog

raphy

Q.39)Whichof the followingus the best whyto identifyhydrogencontrolledelectrodesfor the MMAweldingprocess?

A. The colour of the fluxcovering


9/9

B.The electrodes classification code

on box

C.The electrodes classification code on stamped on to the

electrode

D.The electrode trade/manufacturers

name

E. All of theabove

Documents

cswip question