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QC Welding Test 14:
Q. 1/30: which of the following may be used to reduce distortion
The least amount of deposited weld metal possible with as few weld passes as possible
The least amount of deposited weld metal possible with as many weld passes
Use as faster a welding process as possible with as many weld passes as possible
Use materials with low thermal conductivity and lower elasticity
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Q 1/30
Test Progress : 3.33%
Q. 2/30: Acceptance criteria for RT/VT in plant piping ?
ASME B 31.3
ASME Sec VIII
ASME Sec IX
API1104
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Q 2/30
Test Progress : 6.67%
Q. 3/30: Which of the following is the most likely to be an essantial variables for a welders
A change from a electrode to BS 639 E 4332C to a electrode to AWS A5.1 E6010
Achange of pipe wall thickness by at leased 12.5mm
A change in pre heat from 50°C to 100°C
All of the above
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Q 3/30
Test Progress : 10.00%
Q. 4/30: If the parent material has UTS value of 550N/mm, what would the UTS value be in PSI
3.795 Psi
79.695 Psi
79,200 Psi
3795
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Q 4/30
Test Progress : 13.33%
Q. 5/30: Backing gas helps to prevent oxidation of molten weld pool?
TRUE
FALSE
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.
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Q 5/30
Test Progress : 16.67%
Q. 6/30: Which of the folloewing are applicable to dc electrode -ve when using the MMA welding process
A broad heat affected zone, a reduction in hardness and narrow deep fast freezing weld pool
A narrow heat affected zone,fast freezing weld pool and good penetration properties
Mechanicallly and metllurgically no different to dc electrode +ve
A wide shallow weld pool, flat weld profile and low hardness value
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Q 6/30
Test Progress : 20.00%
Q. 7/30: Which shielding gas would give the best results when welding aluminium with the TIG/TAG welding process
Nitrogen
Helium
Argon
Co2
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Q 7/30
Test Progress : 23.33%
Q. 8/30: Shielding gases protects the root weld from oxidation ?
TRUE
FALSE
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Q 8/30
Test Progress : 26.67%
Q. 9/30: When welding rimming steel with autogenous TIG process which of the following problems may occur
Porosity
Lack of fusion
Tungston inclusion
Excessive cap reinforcement
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Q 9/30
Test Progress : 30.00%
Q. 10/30: Why is a fatigue crack purposely induced into a CTOD specimen prior to testing
So that it is possible too clearly see the initiation point
Because it allowes for the attachment of gauges that measure strain
Because a machined notch by itself is too blunt I order to gain meanigful result
A fatigue crack is not induced prior to testing
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Q 10/30
Test Progress : 33.33%
Q. 11/30: Shielding gas will prevent root oxidation
TRUE
FALSE
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Q 11/30
Test Progress : 36.67%
Q. 12/30: What does PQR stand for
Production Quality control record
Production Quality record
Procedure qualification record
Procedure quality record
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Q 12/30
Test Progress : 40.00%
Q. 13/30: A welder welded with ER 316 electrode, he can weld with ER 70S2 ?
TRUE
FALSE
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Q 13/30
Test Progress : 43.33%
Q. 14/30: Which of the following best describes the elastic limit
The resistance to fracture under impact loading
The maximum stress to which a material can be subjected without permanent deformation
The amount of stress at which a material will continue to elongate without an increase in force applied
The ability of a material to stretch and become permanently deformed without breaking or cracking
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Q 14/30
Test Progress : 46.67%
Q. 15/30: Shielding gases protects the weld pool during welding?
TRUE
FALSE
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Q 15/30
Test Progress : 50.00%
Q. 16/30: In accordance BS 2901 which of the following is classified as atriple deoxidised filler wire
A 17 wire
A 18 wire
A 15 wire
All of the above
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Q 16/30
Test Progress : 53.33%
Q. 17/30: Backing gas protect to molten weld pool ?
TRUE
FALSE
.
.
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Q 17/30
Test Progress : 56.67%
Q. 18/30: In BS 639 an electrode classified as E51
Has an UTS value 51,000 psi, minimum yield strength of 33 N/mm2
Has an UTS value 430 to 550 N/mm2, minimum yield strength of 360 N/mm2
Has an UTS value 510 to 650 N/mm2, minimum yield strength of 360 N/mm2
Has an UTS value 510 to 650 N/mm2, minimum yield strength of 330 N/mm2
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Q 18/30
Test Progress : 60.00%
Q. 19/30: Shielding gas protect to weld oxidation at the root?
TRUE
FALSE
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Q 19/30
Test Progress : 63.33%
Q. 20/30: An E80 electrode would normally be classified in which standard
BS EN 499
BS 639
AWS A5.5
AWS A5.1
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Q 20/30
Test Progress : 66.67%
Q. 21/30: What is an active flux
A material used to clean surfaces of the joint through continued chemical reaction
A material used to protect the molten weld pool during welding
A material used to aid fusion
All of the above
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Q 21/30
Test Progress : 70.00%
Q. 22/30: Which of the following are properties of cellulose electrodes
Viscose slag, large volumes of gas shield aand UTS values above90,000 psi
Large volumes of gas shield, high spatter content and hydrogen contents<15ml per 100g of weld metal deposited
Viscose slag, large volumes of gas shield and hydrogen contents in most circumstances >15ml per 100g of weld metal deposited
High spatter content, High deposition rates and hydrogen contents > 15ml per 100g of weld metal deposited
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Q 22/30
Test Progress : 73.33%
Q. 23/30: Which of the following could be used as stabilises in austenitic stainless steel
Niobium and Nickel
Titanium and tungston
Titanium and niobium
Tungsten and nickel
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Q 23/30
Test Progress : 76.67%
Q. 24/30: Acceptance criteria for RT in plant piping ?
ASME B 31.3
ASME Sec VIII
ASME Sec IX
API1104
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Q 24/30
Test Progress : 80.00%
Q. 25/30: Basic coated electrodes have which of the following properties
High mechanical properties, may be used to produce welds of high deposition rates and are designed to produce welds of low hydrogen content
Friable slag highmechanical properties and are desighned to produce welds of low hydrogen content.
Ease of use, good stop/start properties and high mechanical properties
High mechanical properties, friable slag and to produce a weld of low carbon content
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Q 25/30
Test Progress : 83.33%
Q. 26/30: Which is the most likely appearance of lack of root fusion on a radiograph taken of a single vee butt weld
A dark straight line with light roor
A dark straight line with dark roor
A dark root with straight edges
A dark uneven straight line with a light root
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Q 26/30
Test Progress : 86.67%
Q. 27/30: Whaat is weld decay
Local reduction in chromium of metal under a constant stress at elevated tempratures
Slow plastic deformation of metal under a constant stress at elevated temprature
A type of crack which may occure in materials that are in a state of tensile stress and in contact with a corrosive medium
A type of crack which may occure in the HAZ of the weld of low alloy steels during PWHT
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Q 27/30
Test Progress : 90.00%
Q. 28/30: which of the following electrodes would you expect to have the highest elongation value
E51
E43
E80
E90
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Q 28/30
Test Progress : 93.33%
Q. 29/30: Which of the following is applicable to electrode efficiency
The mass of metal deposited as a percentage of the mass of core wire melted
Iron powder electrodes have efficiences above 100%
Electrode of high efficiencies tend to produce welds of smooth and flat profiles
All of the above
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Q 29/30
Test Progress : 96.67%
Q. 30/30: What is the acceptance criteria of MPT?
ASME SEC VIII, Div.1, Appendix-6
ASME SEC VIII, Div.1, Appendix-8
ASME SEC VIII, Div.1, Appendix-4
ASME SEC VIII, Div.1, Appendix-9
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Q 30/30
Test Progress : 100.00%
Q. 31/30: What would be the main effect produced by increasing the kV in radiography
An increase in sensityvity
An increase in definition
A reduction in density
A reduction in contrast
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Q 31/30
Test Progress : 103.33%
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