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CSWIP 3.2 Test 5:
Q. 1/30: A crack running along the centreline of a weld bead could be caused by:
Use of damp flux.
Lack of preheat.
Arc voltage too high.
Weld bead too deep and very narrow.
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Q 1/30
Test Progress : 3.33%
Q. 2/30: The maximum hardness in the HAZ of a steel will increase if:
Heat input is increased.
CEV is increased.
Joint thickness is decreased.
Basic electrodes are used.
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Q 2/30
Test Progress : 6.67%
Q. 3/30: Initiation of a TIG arc using a high frequency spark may not be allowed because it:
Often causes tungsten inclusions.
Can damage electronic equipment.
Is an electrical safety hazard.
Often causes stop/start porosity.
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Q 3/30
Test Progress : 10.00%
Q. 4/30: In friction welding, the metal at the interface when the joining occurs is described as being in the:
aLiquid state.
Intercritical state.
Plastic state.
Elastic state.
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Q 4/30
Test Progress : 13.33%
Q. 5/30: What four criteria are necessary to produce hydrogen induced cold cracking?
Hydrogen, moisture, martensitic grain structure and heat.
Hydrogen, poor weld profiles, temperatures above 200oC and a slow cooling rate.
Hydrogen, a grain structure susceptible to cracking, stress and a temperature below 300oC.
Hydrogen, existing weld defects, stress and a grain structure susceptible to cracking.
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Q 5/30
Test Progress : 16.67%
Q. 6/30: Austenitic stainless steels are more susceptible to distortion when compared to ferritic steels this is because:
High coefficient of thermal expansion, low thermal conductivity.
High coefficient of thermal expansion, high thermal conductivity.
Low coefficient of thermal expansion, high thermal conductivity.
Low coefficient thermal expansion, low thermal conductivity.
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Q 6/30
Test Progress : 20.00%
Q. 7/30: Transverse tensile test:
Is used to measure the ultimate tensile strength of the joint.
Is used to measure the elongation of a material.
Is used to measure the yield strength of a material.
All of the above.
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Q 7/30
Test Progress : 23.33%
Q. 8/30: In the welding of austenitic stainless steels, the electrode and plate materials are often specified to be low carbon content. The reason for this:
To prevent the formation of cracks in the HAZ.
To prevent the formation of chromium carbides.
To prevent cracking in the weld.
Minimise distortion.
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Q 8/30
Test Progress : 26.67%
Q. 9/30: Essential variable:
in a WPS may change the properties of the weld.
In a WPS may influence the visual acceptance.
In a WPS may require re-approval of a weld procedure.
All of the above.
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Q 9/30
Test Progress : 30.00%
Q. 10/30: percentage?"
44%.
144%.
69.4%.
2.27%.
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Q 10/30
Test Progress : 33.33%
Q. 11/30: Which of the following will vary the most when varying the arc length using the MMA welding process?
Voltage.
Amperage.
Polarity.
Both a and b.
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Q 11/30
Test Progress : 36.67%
Q. 12/30: An undesirable property of aluminium oxide residue is that it:
Creates problems when welding in position (vertical, horizontal, overhead).
Requires more heat to melt it when compared with aluminium.
Increases weld pool fluidity.
Decreases weld pool fluidity.
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Q 12/30
Test Progress : 40.00%
Q. 13/30: A welder qualified in the PG position would normally be qualified for welding:
All diameters of pipe.
Welding positions PA, PC, PG, and PF.
In position PG only.
All pipe wall thickness.
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Q 13/30
Test Progress : 43.33%
Q. 14/30: A fabrication calls for the toes to be blended in by grinding.The most likely reason for this is to…
aMake the weld suitable for liquid (dye) penetrant inspection
Improve the fatigue life
reduce residual stresses
improvethe general appearance of the welds
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Q 14/30
Test Progress : 46.67%
Q. 15/30: A carbon equivalent of 0.48%:
Is high for carbon steel and may require a preheat temperature over 100oC.
Is insignificant for carbon steel and preheat will not be required.
Is calculated from the heat-input formula.
Is not a consideration for determining preheating temperatures.
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Q 15/30
Test Progress : 50.00%
Q. 16/30: Which of the following statements is true?
The core wire of an MMA electrode always contains alloying elements.
Basic electrodes are preferred when welding is carried out in situations where porosity free welds are specified.
Rutile electrodes always contain a large proportion of iron powder.
Cellulose electrodes may deposit in excess of 90ml of hydrogen per 100g of weld metal.
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Q 16/30
Test Progress : 53.33%
Q. 17/30: Preheat:
Must always be carried out on steels.
Need not be carried out if post weld heat is to follow.
Is always carried out using gas flames.
None of the above.
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Q 17/30
Test Progress : 56.67%
Q. 18/30: Which element has the greatest effect on general corrosion resistance?
Manganese.
Chromium.
Carbon.
Nickel.
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Q 18/30
Test Progress : 60.00%
Q. 19/30: Which of the following is the correct arc energy if the amps are 350, volts 32 and travel speed 310 mm/minute.
2.16 kJ/mm.
0.036 kJ/mm.
2.61 kJ/mm.
0.36 kJ/mm.
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Q 19/30
Test Progress : 63.33%
Q. 20/30: Which of the following mechanical test(s) can give a quantitative measurement of ductility?
Tensile test.
Bend test
Nick break test.
Both a and b.
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Q 20/30
Test Progress : 66.67%
Q. 21/30: Which of the following are applicable to fatigue cracking?
A rough randomly torn fracture surface, an initiation point and beach marks.
A smooth fracture surface, an initiation point and beach marks.
Beach marks, step like appearance and a secondary mode of failure.
All of the above.
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Q 21/30
Test Progress : 70.00%
Q. 22/30: Which is the best destructive test for showing lack of sidewall fusion in a 25mm thickness butt weld?
Nick break.
Side bend.
Charpy impact.
Face bend test.
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Q 22/30
Test Progress : 73.33%
Q. 23/30: Which of the following would be cause for rejection by most fabrication standards when inspecting fillet welds with undercut, a small amount of?
Depth.
Length.
Width.
Sharpness.
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Q 23/30
Test Progress : 76.67%
Q. 24/30: The European Standard for NDE of fusion welds by visual examination is:
BS EN ISO 15614.
BS EN ISO 2560.
BS EN 287.
BS EN ISO 17637.
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Q 24/30
Test Progress : 80.00%
Q. 25/30: When visually inspecting the face of a finished weld which of the following flaws would be considered the most serious:
Excess weld metal height.
Start porosity.
Spatter.
Arc strikes.
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Q 25/30
Test Progress : 83.33%
Q. 26/30: A fillet weld has an actual throat thickness of 8mm and a leg length of 7mm, what is the excess weld metal?
2.1mm.
1.8mm.
3.1mm.
1.4mm.
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Q 26/30
Test Progress : 86.67%
Q. 27/30: BS EN ISO 17637 allows the use of a magnifying glass for visual inspection, but recommends that the magnification is:
x2.
x2 to x5.
x5 to x10.
Not greater than x20.
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Q 27/30
Test Progress : 90.00%
Q. 28/30: A WPS may specify a maximum width for individual weld beads (weave width) when welding C-Mn steels. If the width is exceeded it may cause:
Lack of inter-run fusion.
A reduction in HAZ toughness.
Lack of sidewall fusion.
Too low a deposition rate.
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Q 28/30
Test Progress : 93.33%
Q. 29/30: In TIG welding a current slope-out device reduces:
Tungsten spatter.
Risk of crater cracking.
Risk of arc strikes.
Interpass temperature.
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Q 29/30
Test Progress : 96.67%
Q. 30/30: Pipe bores of some materials must be purged with argon before and during TIG welding to:
Prevent linear porosity.
Prevent burn-through.
Prevent oxidation of the root bead.
Eliminate moisture pick-up in the root bead.
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Q 30/30
Test Progress : 100.00%
Q. 31/30: According to AWS A2.4 a weld symbol for the other side is placed:
Above the dashed line.
Below the dashed line.
Above the solid line.
Below the solid line.
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Q 31/30
Test Progress : 103.33%
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