Questions and Answers1. Which of the following does not require baking or

drying?A.E 6010B.E7018C.Sub are flux with Basicity Index of 2D.Sub are flux with Basicity Index of2. A welder and procedure re-qualification would be

required:A.When the run out date of the procedure has been

reachedB.Every YearC.When changing from day to night shift

workD. When there is a change in an essential variable

3. Tensile strength can be increased in steel by:

A.AnnealingB.GalvanisingC.Addition of

carbonD.Casting4. Which of the following always occurs in the parent material?A.Hydrogen cracksB. Laps and laminations

C. Centre line cracks

D. Porosity

5. To prevent the hardening and cracking of High Carbon Steel plate when flame cutting it is advisable to:

A. Pre-heat the plate

B. Soak the plate in oil

C.Cool the plate quickly after cutting

D. Increase the cutting Oxygen pressure

6. You should always refer to a higher authority for guidance when:

A. The welder will not follow your instructions

B.

Instructions are missing in the specification or contract documents

C.All of the above

D.Cracks appear during welding7. Fatigue

testing is used to test welds:A. Under cyclic loading

B. Under creep stress loadings

C.Under impact loading

D. Under static loading

8. In BS 639 and BSEN499 the first digits of the electrode classification indicate:

A. Tensile and yield strength

B.ToughnessC.Electrode coatingD.Electrode

efficiency9. Cellulosic coatings are generally used because of:A. Their low hydrogen content

B.Their high penetration characteristic

C.Their high strength weld deposit

D. Their high weld toughness values

10. When welds have a depth to width ration of higher than 2:1 it is possible that:

A.Centreline cracks may appearB.The fusion boundary will be outside the

HAZC.The HAZ will be too

narrowD. The weld will be non magnetic

11. On which of the following would you not use MPI inspection?

A.A low carbon steel butt-welded joint

B. An Austenitic Stainless steel fillet welded T joint

C.A medium carbon steel fillet welded lap joint

D.All of the above

12. Increasing the arc energy input of a welded joint will:A. Increase the strength of the joint

B.Increase the toughness of the joint

C. Increase the grain size of the weld and HAZ

D.Decrease the width of the HAZ13. In Sub Arc Welding, excessive flux melting will result

from:A.Increasing the arc voltageB. Decreasing the arc voltage

C.Increasing the travel speedD.Increasing the wire feed

speed14. An IQI would be used in radiography to

assess:A.Image qualityB.Type of steelC. Density of graph

D.Type of welding process used15. Silicon is added to electrode

coating as:A.A slipping agentB.A slag formerC A de-oxidant

.D.A colouring

agent16. The main reason degreasing agents should always be dried from metals prior to welding, is because they are

likely to:A. Increase the arc voltage

B.Produce hazardous fumesC. Slow down the welding speed

D. Produce lack of fusion defects

17. Which of the following processes would be most prone to lack of fusion defects?

A.Pulsed arc MIGB. Spray transfer MIG

C. Dip transfer MIG

D.Submerged arc

18. Which of the following is an inspection point in Sub Arc Welding:

A. Flux mesh size

B.Gas typeC.Tungsten sizeD. Gas flow rate

19. Which of the following is not inert gas ?A. Argon

B.XenonC. Carbon dioxide

D.Helium20. Why is a welding arc shielded?A. To eliminate hydrogen

B. To retard the cooling rate of the weld

C. To eliminate the atmosphere

D. To ensure maximum heat input

21. A crack in a weld zone:A. Is repairable

B. Always results in a cut out and complete re-weld

C.Is acceptable up to 2mm in length

D.May be repaired or cut out depending on specification requirements

22. If the amperage is too low during the welding of a root bead, the possible result would be:

A. Lack of penetration

B. Lack of fusion

C The freezing of the electrode

.D.All of the

above23. Pre-heating prior to welding:A.Must always be carried

outB. Need not be carried out if post heat treatment is to follow welding

C.Is always carried out using gas flames

D.All of the above

E.None of the above24. Cold lap in another term for:A. Lack of fusion

B.Low amperage

C.UndercutD.Hydrogen cracking25. When a medium to high carbon steel is quenched:A.It becomes

malleableB.Its hardness

increasesC.It becomes

ductileD. The plasticity is increased

26. The TIG welding process utilizes an electrode that is:A.CellulosicB. Non-consumable

C. Consumable

D.None of the above27. Another name for Suck back in the root of a weld is:A.ConcavityB.ConvexityC.LORPD.Root

undercut28. One of the advantages of a multi-pass MMA weld is that it generally produces

a:A.High tensile strengthB.High degree of ductilityC.Coarse grain

structureD.Fine grain

structure29. The British code for visual inspection requirements is:A.BS 4872B.BS 499C.BS 4870D.None of the above30. A code of practice for visual inspection should cover the

following:A. Before, during and after welding activities

B Before welding activities only

.C.After welding activities

onlyD.None of the above