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QC Welding Test 16:
Q. 1/30: Lamellar tearing has occurred in a steel fabrication before welding could it have been found by
X-ray examination
Dye penetrant test
Ultrsonic inspection
It would not have been found by any inspection method
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Q 1/30
Test Progress : 3.33%
Q. 2/30: Primary element in weld symbol.
• Arrow line
• Reference line
• Dashed line
• Tail
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Q 2/30
Test Progress : 6.67%
Q. 3/30: Austenitic stainless steel electrodes and plate with loww carbon contents are used to minimise the risk of
Cracking in the HAZ
The formation of chromium carbides
Cracking the weld metal
Distortion
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Q 3/30
Test Progress : 10.00%
Q. 4/30: Apparent from bevel of lamination how to find ?
• UT
• RT
• PT
• MT
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Q 4/30
Test Progress : 13.33%
Q. 5/30: Improper flame cut preparations may, during welding increase the liklihood of
Cracking
Misalignment problems
Inclusions
All of the above
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Q 5/30
Test Progress : 16.67%
Q. 6/30: Cracks in welds may be due to
Solidification problems
Hydrogen problems
Excessive stresses
All of the above
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Q 6/30
Test Progress : 20.00%
Q. 7/30: Hydrogen cracking in the weld metal is more likely when welding
Carbon manganese steel
Stainless steel
Micro alloyed steel
Low carbon steels
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Q 7/30
Test Progress : 23.33%
Q. 8/30: In flame cutting , oxy pressure and nozzle size would influence
The temprature required for cut initiation
The ablity to cut stainless steels
The depth of cut obtainable
None of the above
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Q 8/30
Test Progress : 26.67%
Q. 9/30: Pre heating a carbon steel before welding is carried out to minimise the risk of
Scattered porosity
Excessive destortion
Parent metal cracking
Lack of pentration
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Q 9/30
Test Progress : 30.00%
Q. 10/30: Which defect occurred due to using of Damp low hydrogen electrode?
Porosity
Lack of root fusion
Crack
Under cut
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Q 10/30
Test Progress : 33.33%
Q. 11/30: A 10” pipe with groove in horizontal position and pipe is vertical.
2G
3G
5G
6G
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Q 11/30
Test Progress : 36.67%
Q. 12/30: 3G Welding Position quilified for ?
• 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 12/30
Test Progress : 40.00%
Q. 13/30: Crater pipe cause in which Arc process ?
GTAW Process
SMAW Process
SAW Process
GMAW Process
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Q 13/30
Test Progress : 43.33%
Q. 14/30: Welder qualified in 3G pipe position what positions he is qualified?
• 1G,3G & 1F ,2F,3F
• 1G,2G,3G,F,H,V
• 1G 3G Only Not 1F,3F
None for the above
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Q 14/30
Test Progress : 46.67%
Q. 15/30: MIG/MAG welding has what power source?
Constant current
Drooping
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Q 15/30
Test Progress : 50.00%
Q. 16/30: One elbow joint cut out, which test you will conduct before fit-up the same area as a new bevel?
DPT
MPI
UT
RT
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Q 16/30
Test Progress : 53.33%
Q. 17/30: ASME 31.3 is for process piping and ASME SEC VIII DIV 1 is for ?
Pressure Vessel
Tanks
heat exchangers
colmuns
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Q 17/30
Test Progress : 56.67%
Q. 18/30: Which Dia onwards need two welders ?
16”
18”
14”
20”
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Q 18/30
Test Progress : 60.00%
Q. 19/30: Which NDT method is to be used for surface defects in MIG welding process in aluminum alloy pipe?
MT
PT
RT
UT
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Q 19/30
Test Progress : 63.33%
Q. 20/30: Grinding the surface prior to PT will may the defect more visible?
TRUE
FALSE
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Q 20/30
Test Progress : 66.67%
Q. 21/30: Which metal composition improves corrosion resistance?
Chromium
Carbon
Manganese
Nickel
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Q 21/30
Test Progress : 70.00%
Q. 22/30: which gauge use to checking mis-match on the bevel joint ?
Hi-low gauge
cam gauge
bevel protecctor
none of above
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Q 22/30
Test Progress : 73.33%
Q. 23/30: Plant piping welding defects Serious/unacceptable ?
Cracks
under cut
Lamination
under fill
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Q 23/30
Test Progress : 76.67%
Q. 24/30: Convex Fillet weld size can be determined by
Theoretical throat of convex weld
Leg of convex weld
Throat of convex weld
Face of weld
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Q 24/30
Test Progress : 80.00%
Q. 25/30: Low hydrogen electrode ?
7018 or AWS A5.1
7018 or AWS A5.4
7018 or AWS A5.5
None for the above
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Q 25/30
Test Progress : 83.33%
Q. 26/30: E 6010 electrode type and useability?
• Cellulosic & Deep penetration
• Iron Oxide & High deposition
• Rutile & high Strength
Cellulose & not for good penetration
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Q 26/30
Test Progress : 86.67%
Q. 27/30: Which gas is using in purging?
Nitrogen
Argon
C02
none of above
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Q 27/30
Test Progress : 90.00%
Q. 28/30: What is the standard for structural welding?
AWS D 1.1
API 1104
ASME B 31.3
AWS D1.2
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Q 28/30
Test Progress : 93.33%
Q. 29/30: Lamination in pipe bevel prepared area ?
• UT
• RT
• PT
• MT
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Q 29/30
Test Progress : 96.67%
Q. 30/30: Primary element in weld symbols?
• Arrow line
• Reference line
• Dashed line
• Tail
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Q 30/30
Test Progress : 100.00%
Q. 31/30: Welder qualified in 6” Diameter what is the minimum and maximum diameter he can weld ?
2-7/8” and above
6” and above
4” and above
12” and above
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Q 31/30
Test Progress : 103.33%
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