AWS-CWI PROGRAM
MODEL EXAM REVIEW
FUNDAMENTALS
01 At what time CWI to assure compliance with welding procedure
a.Just before welding
b.During production welding
c.At the time of shipping
d.All of the above
e. Only ‘a’ & ‘b’ above
02 An inspector may check which of the following during welding
a.Preheat and interpass temperature
b.Filler metal control
c.Welder qualification
d.All of the above
e.Only ‘a’ & ‘c’ above
03Welding inspector can accept as records only those which are formatted as per code book
a.True
b.False
c.Code book forms are mandatory
d.Company’s records are to beconverted into code formats
e. None of the above
04 Good inspection reports must
a.Employ good record keeping
b.Always be typed
c.Be complete and accurate
d.All of the above
e.Only ‘a’ & ‘c’ above
05 Welding inspector is required to verify that the following records are maintained
a.Tackers’ qualification
b.Engineering drawing
c.Welders qualification
d.Only ‘a’ & ‘c’ above
e.Only ‘b’ & ‘c’ above
06 If the area to be inspected is not readily visible, welding inspector may use
a.Mirrors
b.Boroscopes
c.Flash lights
d.All of the above
e.Only ‘a’ & ‘c’ above
07 The most extensively used weld inspection method is
a.RT
b.UT
c.MT
d.PT
e.VT
08 Metallographic tests are used to determine
a.Soundness of the weld
b.Metallurgical structure of the weld
c.Extent of heat affected zone
d.All of the above
e.Only ‘a’ & ‘c’ above
09 What aspect of fabrication can be checked by visual inspection during welding
a.Treatment of tack welds
b.Quality of root welds
c.Interpass temperature
d.All of the above
e.Only ‘b’ & ‘c’ above
10 Yield strength may be determined by
a.Impact test
b.Macro examination
c.Tensile testing
d.Bend test
11 The base metal next to the weld metal which has microstructure affected by welding heat is known
as
a.Unaffected parent metal
b.Heat affected zone
c.Martensitic zone
d.All of the above
e.Only ‘a’ & ‘b’ above
12 Distortion during welding can be reduced by
a.Peening
b.Sequence of welding
c.Rigid fixture
d.All of the above
e.Only ‘a’ & ‘b’ above
13 Fillet weld break test is used to evaluate
a.Tensile strength of weld metal
b.Ductility of weld metal
c.Quality of the fractured weld metal
d.All of the above
e.None of the above
14 The upper limit of preheating and interpass temperature is specified in quenched tempered steels
in order to
a.Maintain the strength in base metal
b.Avoid cracking
c.Maintain heat affected zone
d.All of the above
e.None of the above.
15 Hardenability of the base material is primarily determined by its
a.Thickness
b.Chemistry
c.Heat treatment
d.All of the above
e.None of the above
16The term “sensitisation of stainless steel” primarily refers to
a.Weldability
b.Loss of corrosion resistance
c.Hardenability
d.All of the above
e.Only ‘a’ & ‘c’ above
17 Hardness of the base metal can be affected by which of the following conditions
a.Heat treatment
b.Cold working
c.Composition
d.Welding process
e.All of the above
18 Inadequate joint penetration can be caused by
a.Insufficient root opening
b.Excessive welding speed
c.Higher size electrode
d.All of the above
e.Only ‘b’ & ‘c’ above
19After a period of finding no defects in welds, welding inspector finds 304 SS welds made with GTAW
show signs of reddish contamination in the area adjacent to the weld. The reason may be
a.Tungsten electrode has melted
b.Shielding gas is contaminated
c.Carbon steel cleaning tools used to brush the edge preparation
d.All of the above
e.Only ‘a’ & ‘b’ above
20 Undercut may be caused by
a.Incorrect electrode angle
b.Excessive speed of travel
c.Excessive current
d.Excessive arc length
e.All of the above
21 Porosity in SAW is caused by
a.High travel speed
b.Low current
c.Coarse flux granules
d.Deoxidised electrode
e.All of the above
22A welder may be required to be requalified because
a.Failure to pass the initial qualification test
b.Frequent failures of his production welds
c.His ability is questioned by welding inspector
d.All of the above
e.Only ‘a’ & ‘b’ above
23 Which of the following welds apply to ‘T’ joint
a.Fillet
b.Braze
c.Seam
d.Plug
e.All of the above
24 That portion of the base metal that has not been melted but whose microstructure has been
altered by the heat of welding is termed as
a.Weld interface
b.Fusion zone
c.Heat affected zone
d.All of the above
e.Only ‘a’ & ‘c’ above
25 Weld toe is
a.The exposed surface of the weld on the side from which welding was done
b.The junction of the weld face and the base metal
c.The weld reinforcement at the side of the joint from which the welding was done
d.Only ‘a’ & ‘b’ above
e.None of the above
26 Which of the following welds apply to corner joint
a.Seam
b.Fillet
c.Plug
d.J groove
e.All of the above
27 Electrode used for GTAW of mild steel is
a.7010
b.Thoriated tungsten
c.Water cooled consumable guide tube
d.‘a’ & ‘b’ above
e.None of the above
28 Brazing filler metal melts at
a.Parent metal melting temperature
b.Temperature less than 450° F
c.Temperature less than 840° F
d.Temperature more than 840° F
e.None of the above
29 Direct current electrode positive means, the work piece is connected to
a.Positive terminal
b.Negative terminal
c.Either positive or negative terminal
d.Earth
e.None of the above
30 Air carbon arc cutting
a.Requires an electrode holder
b.Requires air supply
c.May be done manually or mechanically
d.All of the above
e.Only ‘a’ & ‘b’ above
31 Short circuiting arc transfer is associated in the
a.SMAW
b.GMAW
c.SAW
d.GTAW
e.FCAW
32 SMAW electrodes should be kept
a.Sealed in their original container until ready for use
b.At 550° F until the container is opened
c.At 350 ° F until the container is opened
d.Only ‘a’ & ‘b’ above
e.None of the above
33 Back step technique is used
a.To reduce distortion
b.To produce deeper penetration
c.To increase heat input
d.All of the above
e.None of the above
34 GMAW with short circuit produces
a.Deeper penetration
b.Shallow penetration
c.Greater melt of rate
d.Excellent fusion
e.None of the above
35 The letter ‘CJP’ represents
a.Component joint penetration
b.Critical joint penetration
c.Complete joint penetration
d.Combined joint penetration
e.None of the above
38 The symbol represents
a.Back weld
b.Backing weld
c.Spot weld
d.Surfacing weld
e.None of the above
39 The above symbol represents
a.A double bevel groove butt weld with partial penetration
b.A double bevel groove fillet weld with partial penetration
c.A corner joint with double bevel groove and full penetration with a fillet all around on the arrow
side
d.A ‘T’ joint with double bevel groove and full penetration with a fillet all around
e.Either ‘c’ or ‘d’
40 The above symbol indicates
a.Material testing shall be carried out on 4 samples
b.Magnetic particle testing shall be carried out at 4 locations on the fillet weld of arrow side
c.Magnetic particle testing shall be carried out for 4” on the fillet weld on the arrow side
d.Magnetic particle testing shall be carried out on 4 locations on the other side
e.None of the above
41The suitable NDT method to be adopted for the detection of unexposed laminations in base plate
will be
a.RT
b.PT
c.ET
d.UT
e.NRT
42 For detection of tight cracks and surface defects in steel welds, the NDT method recommended will
be
a.UT
b.RT
c.MT
d.ET
e.VT
43Surface cracks and internal slag inclusions are suspected in aluminium welds. The suitable
method(s) to be adopted is / are
a.RT only
b.RT and UT
c.RT and PT
d.UT only
e.RT and MT
44The discontinuity that is normally produced in welds due to improper edge preparation, excessive
travel speed and wrong electrode size can be detected by
a.VT
b.PT
c.ET
d.RT
e.None of the above
45In magnetic particle testing of a weld, you find powder lying loosely on surface depression. This
indication is termed as
a.Discontinuity
b.Defect
c.Porosity
d.Non relevant indications
e.None of the above
46In prod MT technique, if the prods are placed on the axis of a groove weld, what type of flaw would
cause the clearest indication
a.A transverse surface crack
b.An underbead crack
c.A plate lamination
d.A longitudinal surface crack e.A tungsten inclusion
46In prod MT technique, if the prods are placed on the axis of a groove weld, what type of flaw would
cause the clearest indication
a.A transverse surface crack
b.An underbead crack
c.A plate lamination
d.A longitudinal surface crack
e.A tungsten inclusion
47An ultrasonic test of a plate shows a trace on the CRT with peaks as shown above. If the sweep is
from left to right, the peak at (2) may indicate
a.A flaw at the surface
b.A flaw near the surface
c.A reflection from the back
d.A flaw at the back
e.None of the above
48 Which of the following may an inspector use to perform visual inspection
a.Magnifier
b.Micrometer
c.Fillet weld gauge
d.All of the above
e.Only ‘b’ & ‘c’ above
49The liquid penetrant applied to the surface of the specimen
a.Flows into discontinuities upon the application of developer
b.Is absorbed by discontinuities
c.Is drawn into discontinuities by capillary action
d.Runs into discontinuities by gravity
e.Penetrates the surface by chemical action
50 PT is used for detecting
a.Weld undercut
b.Excessive weld reinforcement
c.Weld discontinuities open to surface
d.Short fillet weld leg size
e.Depth of weld penetration
51 MT is MOST suited for detecting
a.Cracks
b.Short fillet throat dimensions
c.Weld undercut – shallow
d.Excessive weld reinforcement
e.Magnetism of weldment
52 The factor which is most important to the reliability of a test is
a.Ease of conducting the test
b.Cost of required equipment
c.Reproducibility of test conditions
d.Speed of testing
e.Portability of equipment
53 Prior to welding, the inspector may check
a.Welding equipment and welding consumables
b.Joint designs and joint penetrations
c.Testing plans
d.All of the above
e.Only ‘a’ & ‘b’ above
54Which of the following is an advantage of fluorescent penetrants over visible penetrants
a.Inspection can be done in a well lighted area
b.Small indications are clearly seen
c.It can be used when contact with water is objectionable
d.It is less sensitive to contamination
e.The dye requires no vehicle or solvent
55What should be known for the proper interpretation of penetrant indications
a.Previous manufacturing process of the part
b.Technique used in penetrant application and removal
c.Precleaning method
d.All of the above
e.None of the above
56The welding inspector should evaluate critical joint fit up before welding begins. Which of the
following is NOT an essential part of evaluation
a.Tack welds
b.Root opening
c.Post heat temperature
d.Edge preparation
e.Dimension and alignment
57In comparison to surface cracks, the sensitivity of MT to flaws ¼” or more below surface of a thick
weldment is
a.Generally much less
b.Approximately equal
c.Nearly equal if the flaws are non metallic inclusions
d.Nearly equal if the internal and external flaws are of equal widths
e.Greater if the flaws are located near the weld’s axis and the current is used
58What aspects of fabrication can be checked through visual inspection during welding
a.Sequence of weld passes
b.Interpass cleaning
c.Proper preheat
d.All of the above
e.Only ‘a’ & ‘c’ above
59 Which of the following is / are used to perform MT
a.Magnetic powders
b.Yokes
c.Coils
d.All of the above
e.Only ‘a’ & ‘c’ above
60 Brazed joints can be inspected by which of the following test methods
a.UT
b.Leak
c.Torsion
d.Any of the above
e.Only ‘a’ & ‘b’ above
61 Which of the following could interfere with PT
a.An oily surface
b.A wet surface
c.A rough weld
d.All of the above
e.Only ‘a’ & ‘b’ above
62 Ultrasonic waves can be coupled to the test objects effectively
a.Through a film of oil
b.Through a film of air
c.Through a layer of water
d.Through a layer of grease
e.Only ‘a’, ‘c’ & ‘d’ above
63Which one of the following conditions will affect the rate and extent a liquid penetrant will enter
cracks, fissures and other openings
a.The hardness of the specimen being tested
b.The surface condition of the specimen being tested
c.The colour of the penetrant
d.The conductivity of the specimen
e.The residual magnetic field in the specimen
64When should VT to be performed to produce a most cost effective quality as per specification
a.After welding
b.When the shop foreman tells you
c.Prior to welding
d.During welding
e.Only ‘c’ & ‘d’ above
65The principle advantage of UT compared to other NDT methods for weld examination is
a.Good penetration for detection of flaws in thick sections
b.Relatively high sensitivity to small discontinuities
c.Ability to determine the position of internal discontinuities, estimate their size and shape
d.All of the above
e.Only ‘a’ & ‘c’ above
66During production testing, the inspector noted that discontinuity indications found by MT method
were not found by PT method. This indicates
a.There are no flaws
b.The discontinuities are all on the surface
c.The discontinuities are too small for PT sensitivity
d.The discontinuities are not exposed to the surface
e.None of the above
67In film radiography, penetrameters are normally placed
a.Between the intensifying screen and the film
b.On the source side of the part
c.On the film side of the part
d.Between the operator and the radiation source
e.On the x-ray machine
68 The discontinuity at No. 3 is known as
a.Macro fissure
b.Incomplete fusion
c.Piping porosity
d.Undercut
e.Underbead crack
69 The discontinuity at No. 2 is known as
a.Overlap
b.Toe crack
c.Overfill
d.Undercut
e.Toe lamination
70 The flaw at No. 1 is known as
a.Wagon track
b.Toe crack
c.Underlap
d.Undercut
e.Underbead cracking
71 Which of the following discontinuities does NOToccur in GTAW
a.Porosity
b.Slag inclusion
c.Cracks
d.Incomplete fusion
e.Overlap
72 Inspection records should
a.Include comments on the general character of the work
b.Include explanation of repairs
c.State how the work stayed within the prescribed tolerances
d.All of the above
e.Only ‘b’ & ‘c’ above
73 The welding inspector must verify that
a.All records are completed by the time the component is shipped, even though they might not have
been completed at the end of the operation
b.Records of qualification, certification, fabrication and testing are completed and meet code /
specification requirement
c.All the general points are covered in inspection reports since detail is never allowed
d.The component was completed and the shop promises to complete the records before shipment
e.All of the above
74Which of the following is not essential to good record keeping
a.Clearly and concisely stated facts
b.A good company policy manual
c.Well organized reports presenting a total picture
d.Logical sequence to reporting
e.All supporting forms, data and reports included or referenced
75All inspection records may be used
a.To help recall decisions
b.To verify payment of work invoices
c.To verify men hour records for the shop
d.For shipping package slips
e.As a basic for re-employment of workers without performance qualification testing
76A welding inspector must be ethical primarily in order to
a.Insure that employer received fair value for inspection fees
b.Resolve impartial decisions
c.Reject every weld the first time of inspection
d.Safeguard the public’s health and well being
e.Only ‘b’ & ‘c’ above
77The qualification of a CWI covers the responsibilities to
a.Specify welding procedures
b.Compute allowable stresses
c.Perform radiographic examination
d.Conduct tests for base metal composition
e.None of the above
78Any record that require the fabricator’s signature should be prepared by
a.The inspector
b.The fabricator
c.Both the shop foreman and the inspector
d.The QA Manager
e.The engineer
79If a welding inspector feels that he is not qualified to make judgement as to acceptability of the
weldment, he should
a.Do the best he can and report accordingly
b.Call for assistance for some one who is qualified
c.Wait to make judgement until he has time to get additional training
d.Stop all work until procedures are developed within the inspector’s qualification
e.Allow work to continue because further welder experience will improve quality
80 A WPS has been qualified with GMAW short arc transfer process. Which condition below should
allow or disallow a welder qualified for FCAW as to make production welds using that WPS
a.The welder has been checked out on the GMAW equipment, allowing him to weld GMAW on
production
b.The welder’s supervisor assigned him to the job
c.The welder has welded GMAW process in the past, thus qualify him for production welding with
GMAW
d.The welder is qualified to weld FCAW only and is not qualified to weld production part
e.None of the above
81 The CAWI
a.Is responsible to determine weldments conformance to acceptance standards
b.Inspects only the fabricated components associated with welding
c.Performs inspection under the direction of a CWI
d.Is a consultant to CWI
e.Cannot inspect critical hardware
82 A welding inspector should
a.Make sure records meet specified requirement
b.Make sure records are available when needed
c.Make sure records are in as much detail as necessary
d.All of the above
e.Only ‘a’ & ‘b’ above
83 A welding performance qualification test serves to
a.Determine welder’s reliability
b.Determines a welder’s level of skill
c.Provide statistical input for the purpose of estimating the ratio of accepted / rejected welds
d.All of the above
e.Only ‘a’ & ‘b’ above
84Under most code rules, welders may be qualified by their employers, provided they have
a.Passed a prescribed set of tests
b.Been employed for a minimum of six months
c.Qualified by atleast one previous employer
d.Both ‘a’ & ‘b’ above
e.Both ‘a’ & ‘c’ above
85 What shade filter plate is needed when observing SAW at 1000 amps
a.No. 14
b.No. 12
c.No. 10
d.No. 4
e.Clear safety goggles
86 Electrical hazards are
a.Present in electrical arc welding
b.Present in secondary leads
c.Minimized by proper equipment installations
d.More severe in the presence of water or moisture
e.All of the above
87 Over exposure to X or Gamma radiation may cause damage to
a.Sexual organs
b.Blood tissue
c.Skin
d.Internal organs
e.All of the above
88 Oxyacetylene welding
a.Requires No. 10 absorption lens
b.Requires the same absorption lens as SAW
c.Requires eye protection
d.Should not be done in open sunlight
e.Gives off UV light
89 An old specification refers the term “caulk weld”. This
means
a.Putty weld
b.Seal weld
c.Slugged weld
d.A weld with caulking putty
e.Only ‘a’ & ‘d’ above
90 In the figure dimension No. 5 designates
a.Size of the weld
b.Overlap
c.Undercut
d.Convexity
e.Concavity
91 Dimension No. 4 refer to
a.Penetration
b.Overlap
c.Undercut
d.Concavity
e.Convexity
92 Dimension No. 3 refers to
a.Effective throat
b.Convexity
c.Penetration
d.Theoretical throat
e.Actual throat
93 Dimension No. 2 designates
a.Convexity
b.Size of the weld
c.Theoretical throat
d.Actual throat
e.Effective throat
94 Dimension No. 1 designates
a.Theoretical throat
b.Effective throat
c.Actual throat
d.Convexity
e.Size of the weld
95The weld in figure No. 3 above is said to be welded in the
a.Flat position
b.Horizontal position
c.Vertical position
d.Overhead position
e.None of the above
96The weld in figure No. 2 is said to be welded in the
a.Flat position
b.Horizontal position
c.Vertical position
d.Overhead position
e.None of the above
97 What is meant by “buttering” a groove face
a.A form of surfacing in which one or more layers of weld metal is deposited on the surface of the
joint to be subsequently welded
b.A surfacing variation to achieve required dimensions
c.A surfacing variation to achieve metallurgical characteristics such as corrosion resistance
d.The condition which results in metal melting through
e.None of the above
98 Which of the following can be used to join quenched and tempered steel
a.SMAW
b.SAW
c.GMAW
d.All of the above
e.Only ‘b’ & ‘c’ above
99 The sketch shows
a.SMAW
b.FCAW
c.ESW
d.GTAW
e.SW
100 The sketch shows
a.Air carbon arc welding
b.Oxy fuel gas cutting
c.GTA welding
d.Mechanical cutting
e.Plasma arc cutting
101 The sketch shows a test procedure for
a.SMAW
b.GMAW
c.ESW
d.GTAW
e.SW
102 In braze welding, flux may be applied by which of the following
a.Using a filler rod precoated with flux
b.Introducing flux through oxy fuel gas flame
c.Brushing the flux on the joint prior to brazing
d.All of the above
e.Only ‘a’ & ‘c’ above
103 The sketch shows
a.SMAW
b.GMAW
c.GTAW
d.SAW
e.None of the above
104 During ESW, cracks may be avoided by maintaining
a.Proper electrode feed rate
b.Proper current
c.Proper spacing between electrodes
d.All of the above
e.Only ‘a’ & ‘c’ above
105SMAW with too high travel speed can
a.Decrease penetration
b.Cause undercutting at the edges of the weld
c.Cause difficulty in slag removal
d.All of the above
e.Only ‘a’ & ‘b’ above
106Shielding gases used for GMAW include
a.Argon
b.Helium
c.Carbon-di-oxide
d.All of the above
e.Only ‘a’ & ‘b’ above
107Reverse polarity is a non- standard term for
a.DC EN
b.DC EP
c.DC straight polarity
d.DC reverse polarity
e.None of the above
108Torch brazing is accomplished by the use of
a.Neutral oxy fuel gas flame
b.A slightly reducing oxy fuel gas flame
c.An air fuel gas flame
d.All of the above
e.Only ‘a’ & ‘c’ above
109Toxic breathing conditions may be produced when the welding atmosphere consists of
a.Mineral spirits
b.Trichloroethylyne
c.Perchloroethylyne
d.Only ‘a’ & ‘b’ above
e.Only ‘b’ & ‘c’ above
110 When other welding variables are kept constant, increasing the weld current during FCAW will
a.Increase electrode deposition rate
b.Increase penetration
c.Produce concave weld beads with poor appearance
d.All of the above
e.Only ‘a’ & ‘b’ above
111To maintain weld quality during SW, it is necessary to
a.Have sufficient welding power
b.Have DC EN for Aluminium
c.Make test welds before starting
d.Only ‘a’ & ‘b’ above
e.Only ‘a’ & ‘c’ above
112The distance between the tip of the welding electrode and the weld pool surface is called
a.Arc force
b.Arc length
c.Arc blow
d.Arc strike
e.Arc chamber
113 Optimum results are more likely
when EXX 16 and EXX 18 low hydrogen electrodes
a.Used with long arc on down hill welding and a short arc on up hill welding
b.Stored in a refrigerator when the container has been opened
c.Stored in a holding oven at proper temperature
d.Used with a “whipping” burn through
e.GMAW process weld sheet metal
114 Manufacturers recommend that
E7018 electrodes be used with a
“short arc” welding technique. This helps
a.To speed the metal transfer across the arc
b.To maintain good shielding of the molten pool
c.In welding thin sheet metal
d.Root pass “whipping” burn through
e.GMAW process weld sheet metal
115 GMAW is suitable for
a.Carbon steel
b.Stainless steel
c.Aluminium
d.All of the above
e.Only ‘a’ & ‘b’ above
116The function of the covering on a covered arc welding electrode is to provide
a.A shielding gas cover
b.A protecting slag
c.A deoxidized weld metal
d.Arc stabilization
e.All of the above
117 A proper travel speed is essential to a good welding performance. Which of the following factors
influence the travel speed
a.Surface condition of the base metal
b.Joint fit up
c.Welding current
d.All of the above
e.Only ‘a’ & ‘b’ above
118 In SMAW the correct arc length is essential to good welding performance. The correct arc length is
according to
a.Electrode classification
b.Electrode diameter
c.Welding position
d.All of the above
e.Only ‘a’ & ‘b’ above
119 The above symbol represents
a.Double flare V groove weld, ultrasonic test either side in field
b.Double flare bevel groove weld, ultrasonic test both sides in field
c.Double bevel groove weld, ultrasonic test either side in field
d.Double V groove weld, ultrasonic test either side in field
e.None of the above
120 Which of the symbols above is used to indicate a field weld
a.1
b.2
c.3
d.Field welds are not shown in the drawing
e.None of the above
121 What welding symbol above represents the adjacent weld joint
a.1
b.2
c.3
d.4
e.5
122Identify the correct welding symbol for the desired weld
a.A
b.B
c.C
d.D
e.E
123 The symbol adjacent shows the configuration of a
a.U groove weld
b.Bevel groove weld
c.J groove weld
d.Fillet weld
e.Flare V groove weld
124A weld which extends all around the joint is shown in No.
a.9
b.4
c.7
d.3
e.8
125 An intermittent fillet weld is shown in No.
a.1
b.9
c.4
d.7
e.6
126 A plug indicating the depth of fill is shown in No.
a.6
b.3
c.7
d.5 e.8
127 A groove weld with melt through is shown in No.
a.2
b.7
c.6
d.3
e.10
128 The symbol requires
a.Penetrant test on either side of the part
b.Proof testing on other side of the part
c.Penetrant testing on all around the part
d.Penetrant testing as arrow side of the part
e.Proof testing all around the part
129 The above NDT symbol refers to
a.Visual test and penetrant test on both sides of the part
b.Visual test on the other side and penetrant test on arrow side
c.Visual test on arrow side and penetrant test on other side
d.Visual test on the back side of the part and penetrant test on the front
e.None of the above
130 The figure above illustrates a(n)
a.Bend specimen
b.Tensile specimen
c.Impact specimen
d.Macro specimen
e.Drop weight specimen
131 For heat treatable alloys, the minimum preheat and interpass temperature required to prevent
cracking depends on
a.Available hydrogen during welding
b.Condition of heat treatment
c.Its carbon and alloy content
d.All of the above
e.Only ‘b’ & ‘c’ above
132 The test which uses the specimen shown above is
a.All weld metal tensile
b.Macro etch
c.Impact
d.Bend
e.None of the above
133. Which material cannot be soldered with conventional soldering method
• a. cadmium plate
• b. copper
• c. titanium
• d. gold
• e. low carbon plate
133.Which material cannot be soldered with conventional soldering method
• a. cadmium plate b. copper
c. titanium
• d. gold
• e. low corbon plate
134 Brazed joints can be destructively tested by which of the following methods
a.Metallographic
b.Peel
c.Tension
d.All of the above
e.None of the above
135.Which of the following process is NOT the soldering process
a.dipsoldering
b.furnace soldering
c.induction soldering
` d. cold soldering e. iron soldering
136 The sketch above shows.
• a) Shielded Metal arc weldings
• b) Flux Cored arc welding
• c) Gas Metal arc welding-globler transfer
mode
• d) Gas Metal arc welding with spray
transfer mode
• e) Submerged arc welding
137 The rate of cooling in a weld bead is slowed by
a.Decreasing the heat input per inch of the weld
b.Preheating the weldment
c.Reducing the electrode size
d.Increasing the speed of travel
e.Increasing the amperage and travel speed proportionally
138 A stress relief heat treatment (approx. 1100 °F for carbon steel) is intended to
a.Change the microstructure of the weld
b.Increase the tensile strength of the weld
c.Reduce the residual weld stress across the weld
d.Increase the impact strength of the weld
e.Provide a method of overheating for the removal of gas products trapped in the weld
139 Low carbon steel is more weldable than
a.Mild steel
b.High carbon steel
c.Medium carbon steel
d.All of the above
e.Only ‘b’ & ‘c’ above
140 Hardness test method for metals include
a.Brinell
b.Vickers
c.Knoop
d.All of the above
e.Only ‘a’ & ‘b’ above
141 Destructive test of welds are designated to locate
a.Cracks
b.Porosity
c.Incomplete fusion
d.All of the above
e.None of the above
142Preheat is sometimes required for SMAW of materials which have very high thermal conductivity.
Preheat in this case
a.Reduces the amperage required for welds
b.Improves penetration
c.Aids fusion
d.All of the above
e.Only ‘a’ & ‘b’ above
143 The charpy V notch impact test is
a.The most common fracture toughness test
b.Often used in specifying minimum acceptance criteria for base metal
c.Often used for welding procedure qualification
d.All of the above
e.Only ‘a’ & ‘c’ above
144 Guided bend specimens may be
a.Longitudinal or transverse to the weld axis
b.Bent in tensile machines
c.Bent in wrap – around bent jigs
d.All of the above
e.Only ‘a’ & ‘c’ above
145 When the weld structure is to be examined at a magnification over 10X, ________ are used
a.Macro specimens
b.Micro specimens
c.Tensile specimens
d.Charpy specimens
e.Chemical tests
For the weld in butt joint above,
146 No. 1 indicates the
a.Beads
b.Weld root
c.Weld toe
d.Face reinforcement
e.Weld face
For the weld in butt joint above,
147 No. 2 indicates the
a.Beads
b.Weld root
c.Weld toe
d.Face reinforcement
e.Weld face
For the weld in butt joint above, 148 No. 3 indicates the
a.Beads
b.Weld root
c.Weld toe
d.Face reinforcement
e.Weld face
For the weld in butt joint above, 149 No. 4 indicates the
a.Weld beads
b.Weld root
c.Weld toe
d.Face reinforcement
e.Weld face
For the weld in butt joint above, 150 No. 5 indicates the
a.Beads
b.Weld root
c.Weld toe
d.Face reinforcement
e.Weld face
AWS-CWI : FUNDAMENTALS
