CSWIP WIS 5 General Quiz

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10sA10sQuestion 1.Which of these drawing symbols shows weldpenetration depthin accordance with BS EN 22553?s10BCCopyright TWI Ltd 200910ss10D

BS EN 288 & BS EN ISO 15614 are specifications for?Question 2.Welder approval testing.Welding equipment calibration.Welding procedure approval.consumables for submerged arc welding.Copyright TWI Ltd 2009

Question 3.What determines the penetrating power of Gamma rays?Time.Type of isotope.Source to film distance.Source strengthCopyright TWI Ltd 2009

a. Which element has the greatest effect on the HAZ hardness ofcarbon-manganese steel?Question 4.Molybdenum.b. Titanium.Carbon.Copyright TWI Ltd 2009Chromium.

0.48 % may be required in order to?Pre heating a steel plate with a carbon equivalent value (CEV) ofa. Drive out moisture from the plate.Prevent excessive hardening in the HAZ.Prevent the formation of carbides.Improve the mechanical properties of the weld metal.Question 5.Copyright TWI Ltd 2009

A welder approval certificate should be withdrawn if?Question 6.He has not done any welding for a period of 4 months.He has been absent from work for a period of 7 months.The repair rate for his welds exceeds 1%.His work has been examined by UT only.Copyright TWI Ltd 2009

a. In friction welding, the metal at the interface when the joiningoccurs is described as being in the?Question 7.Liquid state.b. Plastic state.Elastic state.Copyright TWI Ltd 2009Inter critical state.

A penetrameter (IQI) is used to measure ?Question 8.The size of a discontinuity in a weld joint.The density of a radiographic film.The degree of film contrast.The quality of the radiographic technique.Copyright TWI Ltd 2009

Question 9.Which of the following cutting methods is suitable for cuttingstainless steel?a. Plasma.Oxy-acetylene .Oxy-propane.It depends upon the thickness.Copyright TWI Ltd 2009

Question 10.Which of the following would be classed as the most serioustype of defect?A buried linear slag inclusion.Buried lack of inter-run fusionSurface breaking lack of sidewall fusionsurface porosity.Copyright TWI Ltd 2009

Question 11Radiographic testing has an advantage over Ultrasonic's for thedetection of ?a. Lack of sidewall fusion.Root undercut.Internal rounded indications.Root concavity.Copyright TWI Ltd 2009

Question 12Exceeding the maximum inter-pass temperature specified for aC-Mn steel weld joint, may give?Excessive porosity.Burn through.Lower toughness.High strengthCopyright TWI Ltd 2009

MIG/MAG welding has a tendency to give lack of sidewall fusionwhen ?Question 13a. Spray transfer conditions are used.100%CO2 shielding gas is used.Pulsed current is used.Dip transfer conditions are used.Copyright TWI Ltd 2009

The temperature range over which a steel goes from having hightoughness to low toughness is called?Question 14.a. The critical transformation temperature.The ductility dip temperature.The bi-modal temperature.The transition temperature.Copyright TWI Ltd 2009

with all other parameters the same?For SAW, what is the effect of raising arc voltagebutkeepingQuestion 15.The weld bead width will increase.The depth of penetration will increase.The weld bead width will decrease.The depth of penetration will decreaseCopyright TWI Ltd 2009

Changing an essential variable (beyond the allowed limits) for aqualified welding procedure ?May change the mechanical properties of the joint.May adversely affect the quality of the weld.Will require a new welding procedure to be approved.All of the above.Question 16.Copyright TWI Ltd 2009

With reference to the various grades of stainless steels, which ofthe following statements is true?They are all non-magneticThey all require 100% Ar for GMAW.They all have very high thermal conductivity.Only certain grades can be used for service at very lowtemperatures.Question 17.Copyright TWI Ltd 2009

Question 18.Which of the following AWS A5.1 electrodes has a rutilecovering?E 6010.E 7016.E 7018.E 6013.Copyright TWI Ltd 2009

Question 19Welds made with very high heat input will show a reduction in?Tensile strength.Notch toughness.Fatigue strength.Creep resistance.Copyright TWI Ltd 2009

During PWHT of a complex fabrication, it is heated to the soaktemperature at a much faster rate than specified by the procedure.this may ?Question 20Cause excessive oxidation.Not allow sufficient time to relieve stresses.Introduce excessive compressive stresses.Cause distortion.Copyright TWI Ltd 2009

When MAG welding in dip transfer mode (short-circuiting mode)spatter can be reduced by ?Question 21Using inductance.Using 100% CO2.Using Ar + 30%He.Increase stick out length.Copyright TWI Ltd 2009

Question 22Repair welding of in-service plant and equipment may be moredifficult than making repairs during initial fabrication because ?The material may be contaminated.Access to repair area may be difficult.Positional welding may be required.All of the above may be factors.Copyright TWI Ltd 2009

Question 23For gamma radiography of a steel weld at 35mm thick,therecommended isotope is ?Thulium 170.Ytterbium 169.Iridium 192.Cobalt 60.Copyright TWI Ltd 2009

Question 24The sensitivity of a radiograph is assessed?By using a densitometer.By using an image quality indicator ( IQI )From the kVA used.From the source/tube to work stand-off distance usedCopyright TWI Ltd 2009

A transverse tensile test, from a Weld Procedure Approval Record(WPAR) test plate, is used to measure?Question 25The tensile strength of the weld.The tensile strength of the welded joint.The stress/strain characteristics of the weld.The stress/strain characteristics of the joint.Copyright TWI Ltd 2009

Question 26Thehighestand lowest heat input positions are considered to be ?PB highest; PA lowest.PE highest; PC lowest.C. PD highest; PB lowest.d. PF highest; PG lowest.Copyright TWI Ltd 2009

What type of covering will an electrode have that is suitable forwelding 60mm C-Mn steel and can give good weld metaltoughness at -50C?Question 27Rutile.Basic.C. Cellulosic.d. Choice will depend on welding position.Copyright TWI Ltd 2009

The dip transfer mode (or short-circuiting mode) of metal transferused for MIG/MAG welding is characterised by ?Giving deep penetration .Being suitable for all positional welding.Giving low spatter.Giving high deposition rate.Question 28Copyright TWI Ltd 2009

Question 29Carbon equivalent values (CEV) are used to determine the how toavoid the risk of ?Hydrogen cracking.Lamellar tearing.Solidification cracking.Weld decayCopyright TWI Ltd 2009

Question 30.When 2 different material thicknesses are welded together, thejoint is referred to as ?Composite joint.Transition joint.Autogenous joint.Heterogeneous.Copyright TWI Ltd 2009

CSWIP WIS 5 Practice Multi ChoiceCSWIP 3.1 Welding InspectionTWI Training & ExaminationServicesCopyright TWI Ltd 2009Answers

10sA10sQuestion 1.Which of these drawing symbols shows weldpenetrationdepth

in accordance with BS EN 22553?s10BCCopyright TWI Ltd 200910ss10DAnswer b

BS EN 288 & BS EN ISO 15614 are specifications for?Question 2.Welder approval testing.Welding equipment calibration.Welding procedure approval.consumables for submerged arc welding.Answer cCopyright TWI Ltd 2009

Question 3.What determines the penetrating power of Gamma rays?Time.Type of isotope.Source to film distance.Copyright TWI Ltd 2009Source strengthAnswer b

a. Which element has the greatest effect on the HAZ hardness ofcarbon-manganese steel?Question 4.Molybdenum.b. Titanium.Carbon.Copyright TWI Ltd 2009Answer dChromium.

0.48 % may be required in order to?Pre heating a steel plate with a carbon equivalent value (CEV) ofa. Drive out moisture from the plate.Prevent excessive hardening in the HAZ.Prevent the formation of carbides.improve the mechanical properties of the weld metal.Answer bQuestion 5.Copyright TWI Ltd 2009

A welder approval certificate should be withdrawn if?Question 6.He has not done any welding for a period of 4 months.He has been absent from work for a period of 7 months.The repair rate for his welds exceeds 1%.His work has been examined by UT only.Answer bCopyright TWI Ltd 2009

a. In friction welding, the metal at the interface when the joiningoccurs is described as being in the?Question 7.Liquid state.b. Plastic state.Elastic state.Answer cCopyright TWI Ltd 2009Inter critical state.

A penetrameter (IQI) is used to measure ?Question 8.The size of a discontinuity in a weld joint.The density of a radiographic film.The degree of film contrast.The quality of the radiographic technique.Answer dCopyright TWI Ltd 2009

Question 9.Which of the following cutting methods is suitable for cuttingstainless steel?a. Plasma.Oxy-acetylene .Oxy-propane.It depends upon the thickness.Copyright TWI Ltd 2009Answer a

Question 10.Which of the following would be classed as the most serioustype of defect?A buried linear slag inclusion.Buried lack of inter-run fusionSurface breaking lack of sidewall fusionsurface porosity.Copyright TWI Ltd 2009Answer c

Question 11Radiographic testing has an advantage over Ultrasonics for thedetection of ?a. Lack of sidewall fusion.Root undercut.Internal rounded indications.Root concavity.Copyright TWI Ltd 2009Answer c

Question 12Exceeding the maximum inter-pass temperature specified for aC-Mn steel weld joint, may give?Excessive porosity.Burn through.Lower toughness.High strengthCopyright TWI Ltd 2009Answer c

MIG/MAG welding has a tendency to give lack of sidewall fusionwhen ?Question 13a. Spray transfer conditions are used.100%CO2 shielding gas is used.Pulsed current is used.Dip transfer conditions are used.Answer dCopyright TWI Ltd 2009

The temperature range over which a steel goes from having hightoughness to low toughness is called?Question 14.The critical transformation temperature.The ductility dip temperature.The bi-modal temperature.The transition temperature.Answer dCopyright TWI Ltd 2009

with all other parameters the same?For SAW, what is the effect of raising arc voltage butkeepingQuestion 15.The weld bead width will increase.The depth of penetration will increase.The weld bead width will decrease.The depth of penetration will decreaseAnswer aCopyright TWI Ltd 2009

Changing an essential variable (beyond the allowed limits) for aqualified welding procedure ?May change the mechanical properties of the joint.May adversely affect the quality of the weld.Will require a new welding procedure to be approved.All of the above.Question 16.Copyright TWI Ltd 2009Answer d

With reference to the various grades of stainless steels, which ofthe following statements is true?They are all non-magneticThey all require 100% Ar for GMAW.They all have very high thermal conductivity.Only certain grades can be used for service at very lowtemperatures.Question 17.Copyright TWI Ltd 2009Answer d

Question 18.Whichof the following AWS A5.1 electrodes has a rutilecovering?E 6010.E 7016.E 7018.E 6013.Copyright TWI Ltd 2009Answer d

Question 19Welds made with very high heat input will showareduction in?Tensile strength.Notch toughness.Fatigue strength.Creep resistance.Copyright TWI Ltd 2009Answer b

During PWHT of a complex fabrication, it is heated to the soaktemperature at a much faster rate than specified by the procedure.this may ?Question 20Cause excessive oxidation.Not allow sufficient time to relieve stresses.Introduce excessive compressive stresses.Cause distortion.Answer dCopyright TWI Ltd 2009

When MAG welding in dip transfer mode (short-circuiting mode)spatter can be reduced by ?Question 21Using inductance.Using 100% CO2.Using Ar + 30%He.Increase stick out length.Copyright TWI Ltd 2009Answer a

Question 22Repair welding of in service plant and equipment may be moredifficult than making repairs during initial fabrication because ?The material may be contaminated.Access to repair area may be difficult.positional welding may be required.All of the above may be factors.Copyright TWI Ltd 2009Answer d

Question 23For gamma radiography of a steel weld at 35mm thick,therecommended isotope is ?Thulium 170.Ytterbium 169.Iridium 192.Cobalt 60.Copyright TWI Ltd 2009Answer c

Question 24The sensitivity of a radiograph is assessed?By using a densitometer.By using an image quality indicator ( IQI )From the kVA used.From the source/tube to work stand-off distance usedAnswer bCopyright TWI Ltd 2009

A transverse tensile test, from a Weld Procedure Approval Record(WPAR) test plate, is used to measure?Question 25The tensile strength of the weld.The tensile strength of the welded joint.The stress/strain characteristics of the weld.The stress/strain characteristics of the joint.Copyright TWI Ltd 2009Answer b

Question 26Thehighestand lowest heat input positions are considered to be ?PB highest; PA lowest.PE highest; PC lowest.C. PD highest; PB lowest.d. PF highest; PG lowest.Answer dCopyright TWI Ltd 2009

welding 60mm C-Mn steel and can give good weld metaltoughness at -50C?What type of covering will an electrode have that is suitable forQuestion 27Rutile.Basic.C. Cellulosic.d. Choice will depend on welding position.Answer bCopyright TWI Ltd 2009

d. Giving high deposition rate.Question 28The dip transfer mode (or short-circuiting mode) of metal transferused for MIG/MAG welding is characterised by ?Giving deep penetration .Being suitable for all positional welding.Giving low spatter.Answer bCopyright TWI Ltd 2009

Question 29Carbon equivalent values (CEV) are used to determine the how toavoid the risk of ?Hydrogen cracking.Lamellar tearing.Solidification cracking.Weld decayCopyright TWI Ltd 2009Answer a

Question 30.When 2 different material thicknesses are welded together, thejoint is referred to as ?Composite joint.Transition joint.Autogenous joint.Heterogeneous.Copyright TWI Ltd 2009Answer b

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