CSWIP 3.1 MODEL 5

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1        An essential variable may:

a)                  Change the properties of the weld

b)                  Influence the visual acceptability

c)                  Require re-approval of a weld procedure

d)                 All of the above

2        A magnifying glass may be used during visual inspection but BS 5289 states that its magnification should be:

           

a)                  Up to 5 f

b)                  2 – 2.5 f

c)                  5 – 10 f

d)                 None of the above

3        When visually inspecting a fillet weld, it would normally be “sized” by:

a)                  The leg lengths

b)                  The actual throat thickness

c)                  The design throat thickness

d)                 Both A & C

4        The planar defect is:

a)                  Incomplete fusion defects

b)                  Slag inclusion

c)                  Incomplete penetration

d)                 Both A & C

           5        Penetrant and Magnetic particle inspection are mainly used to:

a)                  Aid visual inspection

b)                  Because application standard says so

c)                  To confirm “visual uncertainties”

d)                 All of the above

6        Defects outside of the limits specified in a standard should always be:

a)                  Repaired

b)                  Reported to “a senior person”

c)                  Assessed along with other defects

d)                 All of the above

7        MIG welding tends to be susceptible to lack of fusion problems. This is because of:

           

a)                  Poor maintenance of equipment

b)                  Incorrect setting

c)                  Poor inter run cleaning

d)                 All of the above

8        Manual metal arc electrodes can be grouped into three main types. These are:

a)                  Basic cellulosic and rutile

b)                  Neutral cellulosic and rutile

c)                  Basic cellulosic and neutral

d)                 None of the above

9        The main causes of porosity in welded joints are:

a)                  Poor access

b)                  Loss of gas shield

c)                  “Dirty” materials

d)                 All of the above

10        “Weave technique” may give rise to:

a)                  Better profiles

b)                  Improved toe blending

c)                  Improved ripple shape

d)                 All of the above

11        Cracks in welds may be due to:

a)                  Solidification problems

b)                  Hydrogen problems

c)                  Excessive stresses

d)                 All of the above         

12        With reference to a root penetration bead, you could certainly assess:

a)                  Root fusion and penetration

b)                  Root concavity

c)                  Burn-through

d)                 All of the above

13        A fatigue failure characteristic by the appearance of the fracture surface. It would be:

a)                  Rough and torn

b)                  “Cheveron” – like

c)                  Smooth

d)                 None of the above

14        “Stray arcing” may be regarded as a serious defect. This is because:

a)                  It may reduce the thickness dimension of a component

b)                  It may cause liquation cracks

c)                  It may cause hard zones

d)                 All of the above

15        Overlap in welds could be influenced by:

           

a)                  Poor welding technique

b)                  Welding process

c)                  Welding position

d)                 All of t he above

16        Flame cut preparations may, during welding, increase the likelihood of:

a)                  Cracking

b)                  Misalignment problems

c)                  Inclusions

d)                 All of the above

17        Macroscopic examination requires any specimen to be inspected:

           

a)                  Once, after etching

b)                  Twice, before and after etching

c)                  Using a microscope

d)                 None of the above

18        Which of the following may be classes as a “more serious defect”?

           

a)                  Slag inclusions

b)                  Fusion defects (interun)

c)                  Fusion defects (surface)

19        Code of practice is:

a)                  A standard for workmanship only

b)                  A set of rules for manufacturing a specific product

c)                  Levels of acceptability of a weldment

d)                 None of the above

20        Movement of the arc by magnetic forces in-MMA welding is termed:

a)                  Arc deviation

b)                  Arc misalignment

c)                  Arc blow

d)                 Arc eye

21      A metallurgical problem most associated with submerged arc welding is:

a)                  Hydrogen cracking in HAZ

b)                  Solidification cracking in the weld metal

c)                  Hydrogen cracking in the weld metal

d)                 Lamellar tearing in the weld metal

22      Oxy pressure and nozzle size would influence what in flame cutting:

a)                  The temperature required for cut initiation

b)                  The ability to cut stainless steels

c)                  The depth of cut obtainable

d)                 None of the above

23      The main uses of arc cutting/gouging processes are in:

           

a)                  The cutting of single bevel preparations

b)                  The removal of deposited welds

c)                  The cutting of single U-type preparations

24      Which of the following processes joins metals plastically?

a)                  Friction welding

b)                  Resistance welding

c)                  Plasma welding

d)                 All of the above

25      Which electrode classification would be relevant AWS A 5.1-81?

a)                  E 6013

b)                  E 5133

c)                  E 7018 – G

d)                 Fleet weld 5

26      Which of the following coating is associated with “Stove” welding?

a)                  Rutile

b)                  Cellulosic

c)                  Basic

d)                 Oxidizing

27      A common gas mixture used in MIG welding nickel alloys to combine good levels of penetration with good arc stability would be:

a)                  100% CO2

b)                  100% argon

c)                  80% argon 20% CO2

d)                 98% argon 2% oxygen

28      The type of SAW flux is more resistance to moisture absorption:

a)                  Fused

b)                  Agglomerated

c)                  Basic

d)                 All of about the same resistance

29      The flame temperature of oxy/acetylene mixture gas is given as:

a)                  3200° C

b)                  2300° C

c)                  5000° C

d)                 None of the above

30      A large grain structure in steels is said to produce:

a)                  Low ductility values

b)                  Low fracture toughness values

c)                  High fracture toughness values

d)                 High tensile strength

31      The likelihood of brittle fracture in steels will increase with:

a)                  A large grain formation

b)                  A reduction of in service temperature to sub zero levels

c)                  Ferritic rather than austenitic steels

d)                 All of the above

32      Repair welding is often more difficult than production due to:

a)                  The material being ingrained with in-service contaminates

b)                  Restricted access with the repair area

c)                  The possible position of the weld

d)                 Any of the above

33      Hydrogen cracking in the weld metal is likely when:

a)                  Carbon manganese steels

b)                  Stainless steels

c)                  Micro alloyed steels (HSLA)

d)                 Low carbon steels

34      EN standard 288 would refer to which of the following:

a)                  Welder approval testing

b)                  Welding equipment

c)                  Welding procedure approval

d)                 Consumables for submerged arc welding

35      Porosity is caused by:

a)                  Entrapped slag in the solidifying weld

b)                  Entrapped gas in the solidifying weld

c)                  Entrapped metallic inclusions in the solidifying weld

d)                 None of the above

36      In bend test, the face of the specimen is in tension and root is in compression; the type of test being carried out would be:

           

a)                    A root bend test

b)                    A side bend test

c)                    A face bend test

d)                   None of the above

37      Ultrasonic testing is of advantage in detecting which of the following weld imperfections over other NDT methods:

a)                  Lack of side wall fusion

b)                  Surface undercut

c)                  Incompletely filled groove

d)                 Overlap

38      The process of tempering is often carried out to regain toughness after which of the following processes:

a)                  Annealing

b)                  Normalizing

c)                  Hardening

d)                 Stress relieving

39      The presence of iron sulphide in the weld metal is most likely to produce which of the following upon contraction of the weld:         

a)                  Solidification cracking

b)                  Hydrogen cracking

c)                  Intergranular corrosion

d)                 Stress corrosion cracking

40     Generally the most suitable method of detecting lack of sidewall fusion would be:

a)                  Ultrasonic

b)                  MPI

c)                  Radiography

d)                 Penetrants

41      Hot shortness term is used to indicate:

a)                  Lamellar tearing

b)                  Solidification cracking

c)                  Hydrogen cracking

d)                 None of the above