SPECIMEN WRITTEN EXAMINATION QUESTIONSCSWIP 3.1 1.1 Part A and Part A2Candidates are required to tick, or otherwise indicate, the corrective answer in the section provided. There is only one correct answer for each question.1 Applying preheat when welding carbon manganese steel is normally done to avoid:a) Slag inclusionsb) Hydrogen crackingc) Lack of sidewall fusiond) Porosity2 Which of following mechanical properties of a weld in carbon manganese steel is most affected if the heat input per unit length of weld is excessively high? a) Elongationb) Tensile strengthc) Hardnessd) Toughness3 You observe centerline cracking a weld that as been made one of five work stations each making similar components. The first action to take is:a) Impound all welding consumablesb) Report the occurrence to high authorityc) Stop all weldingd) Call for full NDT checks4 Which of the following defects is unlikely to be found by visual inspection? a) Linear misalignmentb) Undercutc) Overlapd) Linear slag inclusion5 Which of the following welding processes uses a resistive heating system to achieve weld metal deposition?a) Manual metal arc weldingb) Submerged-arc weldingc) Electro slag weldingd) Resistance spot welding6 Which of the following units could Charpy V notch energy is measured in?a) Pounds per square inchb) Joulesc) Newtons per square millimeterd) None of the above7 The usual method of assessing the sensitivity of radiograph is by means of a:a) Dosimeterb) Fluoroscopec) IQI ( Penetrameter)d) Clinometer8 Under normal contract conditions, weld procedure approval tests for pipe work are:a) Mandatoryb) Depend upon site and weather conditionsc) Dependent upon the contractor's confidence in his proceduresd) Only required when CO2 welding is to be used.9 Which of the following destructive tests is not normally required for welder approval test for mild steel?a) Bend testb) Macro examinationc) Impact testsd) Fracture tests10 Hydrogen controlled electrodes were developed principally for:a) The prevention of porosityb) The prevention of crackingc) The enhancement of arc voltaged) Their ease of arc starting11 For which of the following is pre-heating most likely to be required?a) Austenitic stainless steelsb) High strength alloy steelsc) Low and medium strength steelsd) Low carbon steels12 Manual metal arc welding of low alloy steels is more likely to be performed with:a) Rutile electrodesb) Cellulosic Electrodesc) Iron powder electrodesd) Basic hydrogen controlled electrodes13 which of the following defects is more common to weld deposited by theCO-2 welding process than weld deposited by manual metal arc?a) Slag inclusionb) Excess penetrationc) Lack of side fusiond) Tungsten inclusions14 Which defect would you expect to obtain in TIG welds in non-deoxidized steel?a) Under cutb) Porosityc) Tungsten inclusionsd) Linear misalignment15 Which of the following can arise from copper inclusions is a ferrite steel weld?a) Weld metal cracksb) HAZ cracksc) Lamellar tearingd) Porosity16 Which of the following is likely to give the highest impact strength in ferritic weld metal?a) Cellulosic electrodesb) Submerged arc with acid fluxc) Spray transfer Co-2-weldingd) Basic coated normal metal arc electrodes17 Which of the following methods of NDT would be most likely to detect lack of side fusion in ferritic steel welds?a) Penetrantsb) Magnetic particlesc) Radiographyd) Ultrasonic flaw detector18 You suspected that ferritic steel plates, which have been edge, prepared contain crack in the prepared edges. Which NDT method would you use to check this?a) Radiographyb) Magnetic particlec) Penetrantsd) Ultrasonic flaw detector19 Which of the following defects do you not expect to find by visual examination of completed welds? a) Linear slag inclusionsb) Under cutsc) Overlapd) Linear misalignment20 Stress relief is not helpful in one of the following cases. Which one?a) In improving resistance to stress corrosion crackingb) In dimensional stability after machining improvingc) In lowering the peak residual stressd) In softening the steelQ.1) When 'hydrogen control' is specified for a manual metal arc welding project the electrode would normally be:A. CellulosicB. Iron oxideC. AcidD. BasicQ.2) You would certainly recognise a hydrogen controlled flux covered electrode from itsA. ColourB. LengthC. Trade nameD. BS639/AWS code letterQ.3) When manual metal arc welding is being carried out on an open construction site, which group of welders are most likely to require continuous monitoring?A. Concrete shuttering welding teamsB. Pipe welding teamsC. Plater weldersD. Plant maintenance weldersQ.4) You notice manual metal arc electrodes, stripped of flux, are being used as filler wire for TIG welding. You would object because:A. It is too expensiveB. The wire would be too thickC. The metal composition may be wrongD. The wire is too shortQ.5) When open site working, serious porosity in metal arc welds is brought to your attention. What would you investigate?A. Electrode typeB. Power plant typeC. Electrode storageD. Day temperatureQ.6) The steel composition in a structural contract is changed from 0.15% carbon 0.6% manganese, to 0.2% carbon 1.2% manganese. This might influence the incidence of:A. PorosityB. Cracking in the weld areaC. Undercut for fillet weldsD. Lack of fusion defectsQ.7) One of the following alloys is non-magnetic - which?A. 4.0% chromium molybdenumB. 12.0% chromiumC. Austenitic stainless steelD. 9.0% nickel steelQ.8) When TIG welding austenitic stainless steel pipe, argon gas backing is called for. This is to:A. Prevent oxidationB. Prevent underbead crackingC. Prevent porosityD. Control the penetration bead shapeQ.9) Pre-heating a carbon steel manual metal arc welding is carried out to minimise the risk of:A. Scattered porosityB. Worm hole porosityC. Parent metal crackingD. Lack of penetrationQ.10) In UK practice, BS499 specifies that the drawing dimension quoted for a fillet weld is the:A. Leg lengthB. Throat thicknessC. Weld widthD. Actual throat thicknessQ.11) For open site manual metal welding the following equipment is available. Which would you choose for safe site working?A. Single operator transformerB. Multi operator transformersC. AC/DC composite power unitD. Diesel engine driven motor generatorQ.12) If submerged arc welding is used to make butt welds, which would you be most critical of?A. The root gap toleranceB. The angle of preparationC. The root face widthD. The gas cut finishQ.13) Preheating for arc welding applies to:A. Assembly welding onlyB. Assembly and tack weldingC. Joints over 25 mm thick onlyD. Cruciform welds onlyQ.14) Which one of the following statements is correct?A. Preheating increases hardnessB. Preheating increases coolingC. Preheating increases dilutionD. Preheating increases shrinkage stressQ.15) You see a welder using an oxy-acetylene flame with a long feathered inner cone. What would be the effect of this on a carbon steel?A. The weld would be hard and brittleB. The weld could be too softC. There will be no effect on the weldD. The weld will have undercutQ.16) A welder qualification test is to verify:A. The skill of the welderB. The quality of the materialsC. The non-destructive test proceduresD. The manufacturing methodsQ.17) A fabricating procedure calls for fillet welds to be 'blended in' by grinding. This influences:A. HAZ. crackingB. Fatigue lifeC. Residual stressD. Yield strengthQ.18) During CO2 welding, the arc length is most likely to be affected by:A. The wire diameterB. The current return connectionsC. The gas flow rateD. The torch to work angleQ.19) Bend test specimens have been taken from a 25 mm thick carbon steel butt weld. Which would show lack of inter-run fusion?A. Side bendB. Root bendC. Face bendD. Guided bendQ.20) Lamellar tearing has occurred in a steel fabrication. BEFORE welding could it have been found by:A. X-ray examinationB. Dye penetrantC. Ultrasonic examinationD. It would not have been found by any inspection methodQ.21) You are to oversee the arc welding of some machine fittings and find that they are cadmium plated. Would you:A. Permit it to proceedB. Permit it to proceed with fume extractionC. Stop the operation at onceD. Advise the welder to drink milk and proceedQ.22) One of the reasons for excluding hydrogen from the weld metal is to prevent the weld from:A. CrackingB. Cooling slowlyC. Cooling quicklyD. ExpandingQ.23) When a metal regains its original shape when a stress acting upon it is removed, the metal is said to have:A. DuctilityB. PlasticityC. MalleabilityD. ElasticityQ.24) Proof stress is used when non-ferrous metals are undergoing tensile tests to determine the equivalent:A. TenacityB. ElasticityC. Yield strengthD. Tensile strengthQ.25) To test a component for vibrational loading, a suitable mechanical test would be:A. ImpactB. TensileC. compressiveD. FatigueQ.26) The main reason for pre-heating medium and high carbon steels before cutting by oxy-fuel gas technique is to:A. Improve the quality of the cutB. Increase the cutting speedC. Refine the grain structureD. Prevent hardening and crackingQ.27) One purpose of a microscopic examination of a weld is to establish the:A. Strength of the weldB. Number of alloying elementsC. Grain sizeD. Number of runs usedQ.28) The predominant structure of an hyper-eutectoid steel that has been quenched at above its upper critical point will be:A. AusteniteB. MartensiteC. TroostiteD. SorbiteQ.29)When weld metal refinement takes place in a multi-run deposit, it is known by the term:A. Weld annealingB. Weld refiningC. Weld normalisingD. Weld recrystallisationQ.30)One advantage of metal gas arc shielded welding is:A. Can be used in draughty locations without protectionB. Produces a deposit low in hydrogen contentC. Any welding position can be welded with spray transferD. Fine spatter at nozzle restricting gas flow