CSWIP 3.1 Multiple Choice Paper 8

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  1. Which of the following defects do you not expect to find by visual examination of completed welds?
  • Linear slag inclusions
  • Under cuts
  • Overlap
  • Linear misalignment
  1. Stress relief is not helpful in one of the following cases. Which one?
  • In improving resistance to stress corrosion cracking
  • In dimensional stability after machining improving
  • In lowering the peak residual stress
  • In softening the steel
  1. Welding a steel plate of CE of 0.45 would require preheating to?
  • Prevent the formation of sulphides
  • Prevent hardening in the HAZ
  • Prevent the formation of carbides
  • To improve mechanical properties in the weld
  1. What effect to low ductile steel plate normally has when they are located outside weld zone?
  • Cause lamellar tearing
  • Fuse together to form a bond
  • Affect the weld metal composition
  • Cause internal tearing on a micro-scale
  1. Which of the following processes uses the “keyholing” system of fusion?
  • Friction welding
  • Diffusion bonding
  • Electron beam welding
  • Autogenous TIG welding
  1. When hydrogen control is specified for a manual metal arc-welding project the electrode would normally be:
  • Cellulosic
  • Iron oxide
  • Acid
  • Basic
  1. You would with certainty recognize a hydrogen controlled flux covered electrode from it’s:
  • Color
  • Length
  • Trade name
  • AWS/EN Code Letter
  1. When 111 process is being carried out on an country pipeline, which groups of welder are most likely to require continuous monitoring?
  • Concrete shuttering welding team
  • Pipe welders
  • Platter welders
  • Plant maintenance welders
  1. You noticed manual metal arc welding electrodes, stripe of flux, are being used as filler wire, for TIG welding. You would object because:
  • It is too expensive
  • The wire would be too thick
  • The weld metal composition may be wrong
  • The wire is too short
  1. When open site working, serious porosity in manual metal arc welding is brought to your attention. What would you investigate?
  • Electrode type
  • Power plant type
  • Electrode storage
  • Day temperature
  1. The steel composition in structural contract is changed form 0.15% carbon, 0.6% manganese, to 0.2% carbon, 1.2% manganese. Might this influence the incidence of:
  • Porosity
  • Cracking in the weld area
  • Under cut for fillet welds
  • Lack of root fusion defects
  1. One of the following alloys is non-magnetic, Which?
  • 4.0% Cr Mo
  • 12.0% Cr
  • 18% Cr ,8% Ni
  • 9.0% Ni
  1. When the TIG welding austenitic stainless steel pipe. Argon gas backing is called for.
  • Prevent oxidation
  • Prevent under bead cracking
  • Prevent porosity
  • Control the penetration bead shape
  1. Pre-heating a carbon steel manual metal arc welding is carried out to minimize the risk of
  • Scattered porosity
  • Worm hole porosity
  • Parent metal cracking
  • Lack of penetration
  1. In ISO 2553 specifies that the drawing dimension quoted for a fillet weld is the:
  • Leg length, z
  • Actual throat thickness
  • Deposit thickness
  • Design throat thickness
  1. For open site manual metal arc welding the following equipment is available. Which would you choose for safe working?
  • Single operator transformer
  • Multi operator transformers
  • AC/DC composite power unit
  • Diesel engine driven motor generator
  1. If submerged welding to be used to make butt welds, which would you be most critical of:
  • The root gap tolerance
  • The angle of penetration
  • The root face width
  • The gas cut finish
  1. During CO-2 welding, the arc length is most likely to be affected by:
  • The wire diameter
  • The current return connections
  • The gas flow rate
  • The torch to work angle
  1. Pre heating for arc welding applies to:
  • Assembly welding only
  • Assembly and tack welding
  • Joint over 25 mm thick only
  • Cruciform welds only
  1. You see a welder using oxy-acetylene flame with along feathered inner cone. What would be the effect of this on carbon steel?
  • The weld could be hard and brittle
  • The weld metal could be too soft
  • There will be no effect on the weld
  • The weld have under cut
  1. A welder qualification test is o verify:
  • The skill of the welder
  • The quality of the materials
  • The non-destructive procedures
  • The manufacturing methods
  1. A fabricating procedure calls for fillet welds to be blended in by grinding. This is to influence:
  • HAZ cracking
  • Fatigue life
  • Residual stresses
  • Yield strength
  1. Bend test specimens have been taken from a 25 mm thick carbon steel butt weld. Which would show lack of inter-run fusion:
  • Side bend
  • Root bend
  • Face bend
  • Guided bend
  1. Lamellar tearing has been occurred in steel fabrication. BEFORE welding could it have been found by:
  • X-ray examination
  • Dye penetrant
  • Ultrasonic inspection
  • It would not have been found by any inspection method
  1. You are to over see arc welding of some machine fittings and find they are cadmium plated. What you:
  • Permit it to proceed
  • Permit it to proceed with fume extraction
  • Stop the operation at once
  • Advise the welder to drink milk and proceed
  1. What two functions in arc welding must be in equilibrium to enable a stable arc to be established?
  • Arc voltage
  • Current
  • Wire/electrode feed rate
  • Metal burn-off rate
  1. In MMA welding, what parameter is used for the control penetration into the base material?
  • Voltage
  • Welding speed
  • Iron powders in the coating
  • Current
  1. In the welding of butt joint from one side, which of the following controls the profile of the root bead?
  • Root Face
  • Bevel Angle
  • Root Gap
  • One of the above
  1. What type of power source characteristic is required for manual welding?
  • Constant voltage
  • Flat Characteristic
  • Drooping Characteristic
  • Motor Generator
  1. Which of the following destructive tests would indicate the toughness of weld metal/parent metal - HAZ.
  • Macro
  • Nick break
  • Hardness
  • CVN

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This spec replaced by ISO 2553

Please check again question No 4,17,18,

Please get answer here.

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When hydrogen control is specified for a manual metal arc-welding project the electrode would normally be:

Iron oxide
Basic-low hydrogen <5ml/100gram
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Current -control the penetration in MMA


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