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QC Welding Test 9:
Q. 1/30: DPI stand for ?
Variables of Contrast of paint
Variables of Type of Developer
Detect Sub Surface defect
None of the above
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Q 1/30
Test Progress : 3.33%
Q. 2/30: For substituting with 4 side bend test minimum thickess is required ?
1’’
1/2’’
¾’’
3/8’’
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Q 2/30
Test Progress : 6.67%
Q. 3/30: During Co2 welding the arc length is most likely to be affected by
The wire diameter
Torch to work angle
Inductance
Current return connection
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Q 3/30
Test Progress : 10.00%
Q. 4/30: You noticed an excess penetration in a C/Mn welded cross country pipe line, what could be the reason ?
Wrong Electrode
Contaminated Electrode
Excess Root Grinding
Large Root Face
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Q 4/30
Test Progress : 13.33%
Q. 5/30: In friction welding is the metal at the interface in the
Liquid state
Siolid state
Plastic state
Elastic state
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Q 5/30
Test Progress : 16.67%
Q. 6/30: Which of the following Codes is used for Welder Qualification ?
ASME Section V
ASME Section II
ASME Section IX
ASME Section VIII
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Q 6/30
Test Progress : 20.00%
Q. 7/30: What is the minimum thickness required for replace 2 side & 2 root bend tests with 4 side bend tests for procedure qualification?
• 3/8 “
• 1/8”
• 5/8”
• 4/8”
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Q 7/30
Test Progress : 23.33%
Q. 8/30: Which one of the following type of steel would give rise to the formation of prosity when autogenously welded with an arc process
Fully killed steel
Semi killed steel
Rimming steel
Fine grained steel
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Q 8/30
Test Progress : 26.67%
Q. 9/30: In a SAW welding process, which could be reason for centre line crack ?
Deep and Narrow weld
Large amount of hydrogen
Lamination present in parent material
Poor start and stop
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Q 9/30
Test Progress : 30.00%
Q. 10/30: Submerged arc fluxes can be supplied in two forms, thees are
Sintered
Agitated
Crushed
Fussed and agglomerated
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Q 10/30
Test Progress : 33.33%
Q. 11/30: Which method is used for detecting the sound beam in volumetric defect?
LPT
UT
RT
Eddy Current
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Q 11/30
Test Progress : 36.67%
Q. 12/30: Which one of the following process used the keyholing system of fusion
Friction welding
Diffusion bonding
Electron beam welding
Autogenous TIG welding
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Q 12/30
Test Progress : 40.00%
Q. 13/30: What is the strength of fillet weld ?
Throat thickness
Leg length
weld bead wide
weld profile
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Q 13/30
Test Progress : 43.33%
Q. 14/30: In accordance with BS 499 what is the weld junction
The area containing HAZ and weld metal
The weld metal and parent metal
The boundry between the fusion zone and HAZ
The part of the weld which undergoes metallurgical change due to heat from welding
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Q 14/30
Test Progress : 46.67%
Q. 15/30: In Single V groove weld , welding should be done in wich which area ?
Bevel angle
root face
bevel face
all
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Q 15/30
Test Progress : 50.00%
Q. 16/30: If A welder qualified on plate 3G position what positions he will be qualified for production joint welding?
• 1G,3G & 1F ,2F,3F
• 1G,2G,3G,F,H,V
• 1G 3G Only Not 1F,3F
• 2G,3G&4G
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Q 16/30
Test Progress : 53.33%
Q. 17/30: Which of the following are essential factors for lamellar tearing
High residual stress,poor through thickness ductility existing plate lamination
Poor through thickness ductility, fusion face parallel with rolled direction of parent plate, most commonly occurs in butt welds
Stress poor through thickness ductility,fusion face parallel with rolled direction of parent meterial
Tensile stress,deoxidised parent plate, poor through thickness ductility
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Q 17/30
Test Progress : 56.67%
Q. 18/30: Best method to find surface defects on carbon steel material?
• RT
• PT
• VT
• MPT
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Q 18/30
Test Progress : 60.00%
Q. 19/30: In gas welding, leftward welding is described in BS 499 as
The flame is directed towards the welded part and filler material is directed toward unwelded part of the joint
The flame and filler mqaterial are both directed towards welded part of the joint
The flame is directed towards the unwelded part and the filler material is dierected towards welded part of the joint
The flame and filler mqaterial are both directed towards unwelded part of the joint
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Q 19/30
Test Progress : 63.33%
Q. 20/30: Which NDT method is used to check lamination ?
• UT
• RT
• PT
• MT
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Q 20/30
Test Progress : 66.67%
Q. 21/30: Which alloying elements controls Corrosion resistant...?
Chromium
Carbon
Manganese
Nickel
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Q 21/30
Test Progress : 70.00%
Q. 22/30: Which of the following is not a fusion welding process
Thermit welding
Electro slag welding
Laser welding
Friction welding
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Q 22/30
Test Progress : 73.33%
Q. 23/30: Non metallic inclusion In weld is ?
• Undercut
• porosity
• Slag
• Crack
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Q 23/30
Test Progress : 76.67%
Q. 24/30: In submerged arc welding the use of the excessively high voltage would result in
Insufficiant flux melting
Excessive flux melting
Slag removal difficulties
Spatter
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Q 24/30
Test Progress : 80.00%
Q. 25/30: Acceptance criteria for PT ?
• Appendix 6 of ASME Section VIII
• Article 4 of ASME Section II
• appendix 8 of ASME Section VIII
• Article 2 of ASME Section V
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Q 25/30
Test Progress : 83.33%
Q. 26/30: Which one of the following destructive tests would indicate the toughness of weld metal
Macro
Nick break
Hardness
Charpy Vee notch
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Q 26/30
Test Progress : 86.67%
Q. 27/30: What will happen to the weldment if uniform heat will not be generated throughout welding operation ?
• Slag inclusion
• Undercut at the base metal
• Porosity
• Distortion
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Q 27/30
Test Progress : 90.00%
Q. 28/30: Which of the following will not be include in PQR?
Joint design
PWHT
Metal thickness
Process
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Q 28/30
Test Progress : 93.33%
Q. 29/30: Name the fourth weld process crack which has a totally different formation mechanism to HICC, Solidification cracking and lamellar tearing
Liquation cracking
Re heat cracking
Crater cracking
Hot tearing
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Q 29/30
Test Progress : 96.67%
Q. 30/30: In cross country pipeline from what pipe diameter and onwards two welders deployed welding joint from opposite direction?
16 “
20”
8”
18”
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Q 30/30
Test Progress : 100.00%
Q. 31/30: E 6010 condition & advantage ?
• High deposition, Basic
• Good penetration, Cellulose
• Low penetration, Retile
• None of the above
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Q 31/30
Test Progress : 103.33%
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