Test
Welding Test Practice
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Preguntas del test (40)
1The ability of a metal to permanently deform under load without breaking is known as:
- Aductility
- Bbrittleness
- Ctoughness
- Delasticity
2The ultimate pull that a material will withstand is called:
- Ayield strength
- Btensile strength
- Cductility
- Delasticity
3Impact tests, such as Izod or Charpy, are designed to measure:
- AThe weld metal's hardness
- BThe weld metal's ductility
- CThe ability of the weld to withstand abrasion
- DThe weld's impact strength
4The point at which a material begins to deform permanently under load is called its:
- Ayield point
- Bultimate tensile strength
- Cductile fracture point
- Dbrittleness limit
5Dynamically loaded structures are subject to:
- Aconstant pressure
- Breversals of stress
- Cloads that do not impact
- Dstationary loading conditions
6Which is the best example of a dynamically loaded structure?
- Athe pillars supporting the roof of a steel oil storage tank
- Bthe column supporting the wall in a building
- Cthe boom on a crane making a lift, and then swinging the load
- Dthe base plate on a stationary pipe rack
7A static load means that the load will:
- Ashift quickly from side to side
- Bbe applied and removed slowly
- Cbe steady and relatively unchanging
- Dbe subjected to stress reversals or constant vibration
8Which is the best example of a statically loaded structure?
- Athe boom of a crane making a lift, and then swinging the load
- Bthe frame of a loaded and moving gravel truck
- Can air compressor receiver tank
- Dthe column supporting the wall in a building
9Electrodes used in SMAW are often called:
- Aconsumable electrodes
- Bnon-consumable electrodes
- Ccore wire electrodes
- Dwrapped electrodes
10Electrode specifications are written by:
- AAWS and WCB
- BCSA and NEMA
- CCSA and AWS
- DASME and NEMA
11In the AWS classification for SMAW mild steel electrodes, what does the last digit represent?
- Athe type of shielding gas produced by the melting flux
- Bthe amount of metallic powder that is added to the coating
- Cthe welding position in which the electrode may be satisfactorily operated
- Dthe major ingredient in the coating and recommended current for best results
12What do the first two digits in the AWS classification for carbon steel SMAW electrodes represent?
- Acurrent type and application
- Bas-welded minimum tensile strength
- Crecommended welding positions
- Diron powder content of the coating in %
13In the CSA numbering system for welding electrodes, what does the prefix letter E represent?
- Aelectronic
- Benergized
- Celectrode
- Delectromotive force
14According to AWS, which number indicates the positions an E7024 can be used in?
- Afirst number
- Bsecond number
- Cthird number
- Dfourth number
15The CSA system uses what term to measure tensile strength?
- Akilopascals
- Bjoules per square meter
- Cmegapascals
- Dwatts per square meter
16Which set of characteristics best describes the electrode E48014?
- Amineral coating, 50% metallic powder, AC or DCSP
- Blime coating, 40% metallic powder, AC or DCRP
- Crutile coating, 30% metallic powder, AC or DC either polarity
- Dcellulose coating, 10% metallic powder, AC or DCRP
17E7024 electrodes are designed to be used in which positions?
- Aall positions
- Bfiat and horizontal positions only
- Cflat position only
- Dvertical downhill position only
18What is the difference between an E7018 and an E7028 electrode?
- AE7018 has a lime-type coating; E7028 does not
- BE7018 can be used in all positions; E7028 cannot
- CE7018 has metallic powder in the coating; E7028 does not.
- DE7018 is for static loading; E7028 is for dynamic loading.
19Which electrode is restricted to welding in the flat position only?
- AE7038
- BE7027
- CE7024
- DE7014
20Which electrode has the least amount of metallic iron powder in its coating?
- AE6010
- BE7014
- CE7018
- DE7028
21What is one difference between an E7010 electrode and an E7018 electrode?
- Acore wire
- Bminimum as-welded tensile strength
- Ccoating
- Drecommended welding positions
22What is one characteristic of an E6010 electrode?
- Adeep penetration into the base metal
- Bproduces a low hydrogen type weld deposit
- Cshallow penetration into the base metal
- Dwide metal flow and very fluid puddle
23What is the major difference between the coatings of an E41010 and an E41011 electrode?
- AThere is no difference,
- BAn E41010 requires moisture but an E41011 does not
- CAn E41010 has potassium added as an are stabilizer for AC welding.
- DAn E41011 has potassium added as an arc stabilizer for AC welding
24Why is iron powder added to the coatings of some electrodes?
- Ato prevent the core wire from rusting
- Bincrease the rate of weld deposit
- Cto help bind the elements in the coating
- Dto decrease the sulphur content in the weld
25Which electrode has a cellulose coating?
- AE6010
- BE6013
- CE7014
- DE7018
26Which electrode contains the highest amount of iron powder in its coating?
- AE6010
- BE6011
- CE6013
- DE7014
27What is one purpose of the flux coating on a welding electrode?
- Ato promote the formation of oxides and nitrides in the weld puddle
- Bto prevent undercut and are blow, and minimize distortion
- Cto prevent the formation of a gaseous shield around the molten weld metal
- Dto protect the molten weld puddle from atmospheric contamination
28Which last digit, in the classification of a SMAW mild steel electrode, describes a flux that is lime-based?
- A0
- B1
- C4
- D8
29Adding large amounts of iron powder to electrode coatings would limit welding to which positions?
- Aoverhead
- Bvertical
- Cflat and horizontal
- Ddownhill
30What is one function of the slag produced from electrode coatings?
- Ato add more nitrogen and oxygen to the weld
- Bto help maintain the arc and control penetration
- Cto add alloying elements to the weld deposit
- Dto prevent the weld from cooling too rapidly
31Which statement is true about the slag produced when welding with a coated electrode?
- Aspeeds up the freezing rate of the molten metal
- Bhelps prevent oxygen and nitrogen from contaminating the weld
- Cspeeds up the cooling rate of solidified weld metal
- Ddistorts the shape of the deposit if not removed quickly
32What is the likely effect of using low hydrogen electrodes with a moisture content that exceeds acceptable limits?
- AThe weld metal will probably have porosity and may develop hydrogen- induced cracking.
- BThe slag produced will be difficult to remove, resulting in slag inclusions on subsequent passes
- CThe excess steam rising out of the protective gaseous shield will make it hard to see the puddle
- DThe deposited weld metal will look too much like the deposit of a cellulose- coated electrode.
33What is the main purpose for keeping low hydrogen electrodes dry?
- Ato assist in producing and maintaining a stable, smooth arc
- Bto minimize the possibility of hydrogen-induced cracking
- Cto increase the electrode's deposition rate
- Dto increase the shelf life of the electrodes in storage
34What is the recommended moisture content for E6010 electrode coatings?
- A0% to 2%
- B3% to 7%
- C8% to 10%
- D11% to 14%
35Proper handling of electrodes includes following the manufacturer's recommendations regarding:
- Athe physical properties of the base metal.
- Bthe core wire diameter of electrode being used.
- Cwelding position and amperage settings.
- Dstorage and reconditioning procedures.
36To weld thin materials, you would likely select an electrode with:
- Adeep penetration characteristics.
- Ba large diameter core wire.
- Ca small diameter core wire.
- Da high as-welded tensile strength
37Which electrode works best for the root bead on groove welds with an open gap?
- AE41013
- BE48028
- CE41010
- DE48024
38What is the major advantage of using an E41010 for the root bead, and E48018 electrodes for fill passes on one welded joint?
- AThe company can save money on the cost of electrodes because E41010 electrodes are cheaper.
- BIt is easier on the welding machine if the amperage changes periodically and E41010 electrodes use lower amperages.
- CIt takes advantage of the penetration qualities of the E41010 and the mechanical properties of the E48018.
- DIt will determine if welders can follow specific procedures before they attempt the B pressure test.
39It is important to know the chemical and mechanical properties of the base metal so you can select an electrode with the correct:
- Adiameter
- Bcurrent requirements.
- Clength
- Dflux coating.
40Which electrode would be the best choice if the base metal properties were unknown?
- AE7018
- BE7014
- CE6011
- DE7024
Información
- Descripción
- Second Year Welding test 2024
- Autor
- Nunya Business
- Idioma
- English
- Visitas
- 11
- Etiquetas
- Valoración
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