exam 2 Flashcards
1
Q
Which factor will cause uneven loading on sling legs?
A) The lifting lug position.
B) The varied length of the sling leg.
C) The position of the sling eye in the lifting hook.
D) All of the above could cause uneven loading on sling legs.
A
D) All of the above could cause uneven loading on sling legs.
2
Q
What electrode is used for welding high strength pipe such as APIX52?
A) E490-G
B) E4910-AI
C) ER80S-D2
D) E81Tl-B2
A
B) E4910-AI
3
Q
Who is responsible to ensure that you, as a worker, wear all required PPE and ensure they are in good
condition?
A) You, the worker.
B) The foreman of the job.
C) The person tasked with organizing the activity.
D) The OH&S inspector.
A
A) You, the worker.
4
Q
If two or more cranes are to be used to lift one load, how many signalmen are required?
A) depends on the number of cranes
B) never less than two
C) one for each comer of the load
D) only one signalman
A
D) only one signalman
5
Q
On the flip up visor of a welding helmet a gasket is placed between the outer glass and the filter plate to
prevent:
A) the filter from shifting.
B) heat from cracking the filter plate.
C) the lens from getting covered in smoke.
D) discoloration of the lens.
A
B) heat from cracking the filter plate.
6
Q
What is the % carbon content of pig iron when it is collected from the bottom of a blast furnace?
A)30
B)25
C) 14
D) 5
A
D) 5
7
Q
Aluminum is:
A) known to have the property of red hardness.
B) known to improve oxidation resistance.
C) used as an alloying element to increase strength and toughness.
D) used as a deoxidizer in steel production.
A
D) used as a deoxidizer in steel production.
8
Q
A two stage regulator would be used in applications for:
A) delivery gas at varying pressure.
B) feeding to sensitive instrumentation.
C) station outlets on a manifold system.
D) an individual outfit.
A
B) feeding to sensitive instrumentation.
9
Q
What is the definition of the ability of a material to stretch under load without breaking called?
A) Brittleness
B) Tensile strength
C) Elasticity
D) Ductility
A
D) Ductility
10
Q
The type of eye protection that uses welding hand shields is known as what type of class?
A) Class 1
B) Class 2
C) Class 3
D) Class 4
A
D) Class 4
11
Q
Your boss has requested that you perform a weld on a gas tank that is still half full. You should:
A) make sure all other openings are plugged before you do the weld.
B) refuse to weld the tank until it is completely and effectively emptied and cleaned.
C) move the tank so the point to weld is above the liquid level.
D) make sure the tank is completely full before you perform the weld.
A
B) refuse to weld the tank until it is completely and effectively emptied and cleaned.
12
Q
Which of the following statements is TRUE regarding the various passes when welding?
A) Only one fill pass is ever made: heavy welds simply mean larger stringer beads.
B) The finish pass and the hot pass are terms for the same procedure.
C) Fill passes are always done with weave beads.
D) When welding thinner material, the fill and cap pass can be one and the same.
A
D) When welding thinner material, the fill and cap pass can be one and the same.
13
Q
Exposure to ____ rays when welding could cause cancer or damage to body tissues.
A) gamma
B) infrared
C) visible light
D) sound
A
A) gamma
14
Q
When hoisting the following load, what is the tension on the slings marked “a”?
A) 500 kg
B) 250 kg
C) 150 kg
D) 100kg
A
B) 250 kg
15
Q
The term ‘dressing’ when referring to a grinder wheel means that you are:
A) flattening the wheel.
B) restoring the sharpness of the wheel.
C) causing the wheel to glaze over.
D) ensuring that the wheel is concentric with its axis.
A
B) restoring the sharpness of the wheel.
16
Q
The membership of a joint work site and safety committee is located in what Part of the OHS Code?
A) Part 11
B) Part 13
C) Part 18
D) Part 28
A
B) Part 13
17
Q
The ventilation system in a welding shop should have the air completely changed at least ____ time(s) every hour.
A) one
B) two
C) three
D) four
A
D) four
18
Q
The risk of _____ increases if a welder is welding with wet gloves.
A) an arc flash
B) electrical shock
C) irritated skin
D) loss of power
A
B) electrical shock
19
Q
A l/0 welding cable is physically larger than a # 1 welding cable.
A) True
B) False
A
A) True
20
Q
The major component of stainless steel is:
A) iron
B) silicon
C) nickel
D) chromium
A
A) iron
21
Q
What is tensile strength?
A) It is the resistance of material to withstand a sharp high velocity blow.
B) It is usually measured with a punch and die set.
C) It is the ultimate pull a material will stand without fracture.
D) It is the stress point at which permanent deformation takes place.
A
C) It is the ultimate pull a material will stand without fracture.
22
Q
Which of the following cast iron types has extreme hardness due to rapid cooling?
A) Gray cast.
B) White cast.
C) Malleable cast.
D) Nodular cast.
A
B) White cast.
23
Q
- Nickel steels:
A) are used for tubing in highly stressed aircraft parts.
B) have increased strength and hardenability.
C) to some extent have atmospheric corrosion resistance.
D) are commonly used for high pressure piping at elevated temperatures.
A
B) have increased strength and hardenability.
24
Q
If a welder is wearing safety glasses they must be revoked before alternate face protection can be used.
A) true
B) false
A
B) false
25
The three categories of cutting torches are:
A) lazer, combination and plasma.
B) plasma, machine and lazer.
C) light, medium and heavy duty.
D) machine, combination and standard.
D) machine, combination and standard.
26
When using a grinder to remove the backing from a 4GF SMAW weld, why should the grinder marks not be parallel to the weld?
A) Parallel grinder marks will obscure the weld
B) Parallel grinder marks may lead to weld failure upon bending
C) Parallel grinder marks will strengthen the weld
D) Parallel grinder marks will make the weld appear wider that it is
B) Parallel grinder marks may lead to weld failure upon bending
27
Coke is a fuel with a very high content of:
A) limestone.
B) carbon.
C) magnetite.
D) calcium.
B) carbon.
28
The pressure of a full oxygen cylinder vary with temperature. A cylinder charged to 15170 kPa should read approximately ____ MPa at -12 degrees Celsius.
A) 17.2
B) 13.9
C) 12.7
D) 11.4
C) 12.7
29
A regulator's main function is to maintain a constant delivery pressure and:
A) ensure that gas volumes are maintained.
B) act as an effective mixer of gases.
C) only operate on individual oxyfuel outfits.
D) reduce the source pressure to an operating pressure.
D) reduce the source pressure to an operating pressure.
30
A ____ is a short length of weld used to hold parts in alignment.
A) cover pass
B) fill pass
C) root pass
D) tack weld
D) tack weld
31
What is the most common iron ore?
A) Steel
B) Hematite
C) Graphite
D) Carbon
B) Hematite
32
What is thermal expansion?
A) It is a flow rate for electrons through air resulting in heat.
B) It is a flow rate for voltage through a material.
C) It is the rate at which heat travels through a material.
D) It is the increase in physical dimensions due to an increase in temperature.
D) It is the increase in physical dimensions due to an increase in temperature.
33
What is the recommended limit of electrode inclination for welding in a flat position?
A) Perpendicular to 5°
B) 5° to 15°
C) 15° to 45°
D) 45° to 90°
B) 5° to 15°
34
When oxygen is used for cutting and the purity is below 95%, the cutting action:
A) make a nice clean cut and is more efficient.
B) disappears and becomes a melt and wash action.
C) can be performed on thick steels with little difficulty.
D) is clean and results in less fuel being used.
B) disappears and becomes a melt and wash action.
35
Nickel is:
A) known to have the property of red hardness.
B) known to improve oxidation resistance.
C) used as an alloying element to increase strength and toughness at low temperatures.
D) used as an alloying element to increase strength and toughness at high temperatures.
C) used as an alloying element to increase strength and toughness at low temperatures.
36
What is a quick way to check the width of a root face when positioning a joint for a 3G SMAW process?
A) a steel rule
B) an asbestos gauge
C) an electrode core wire
D) a coupon spacer
C) an electrode core wire
37
Regulators are classified as to their:
A) service and type.
B) color and size.
C) weight and size.
D) stage and type.
A) service and type.
38
Which of the following cast iron types is formed by an annealing process that causes carbon to form into rounded particles?
A) Gray cast.
B) White cast.
C) Malleable cast.
D) Nodular cast.
C) Malleable cast.
39
In how many types is steel produced?
A) 6
B) 5
C) 4
D) 3
D) 3
40
An electrode picks up or emits _____ in an electric circuit.
A) protons
B) neutrons
C) electrons
D) atoms
C) electrons
41
Which of the following defines density?
A) It is the mass of a substance divided by its volume.
B) It is the weight of one substance compared to the weight of another.
C) It is the specific gravity of a substance compared to an equal ambient temperature value.
D) It is a pressure relationship compared to the standard compressed value of 276 kPa.
A) It is the mass of a substance divided by its volume.
42
Which of the following is a disadvantage of an AC transformer welder?
A) Their operating costs.
B) The operating noise level.
C) Their portability.
D) Their maintenance costs.
C) Their portability.
43
When preparing pipe (GTAW) for groove welds, what bevel is used, generally?
A) 15° -22.5°
B) 20° - 27.5°
C) 25° - 32.5°
D) 30° - 37.5°
D) 30° - 37.5°
44
Temperature can be defined as:
A) a volume or quantity and is measured in Joules.
B) a degree or intensity and is express in degrees Celsius.
C) the transfer of energy from one body to another.
D) the transfer of energy from one part of a body to another.
B) a degree or intensity and is express in degrees Celsius.
45
The welding symbol pictured describes which type of weld?
A) Single U groove weld, all around, arrow side.
B) Single vee groove weld other side, back weld arrow side.
C) Surface to be built up by welding.
D) Single vee groove weld other side, single U groove weld arrow side.
B) Single vee groove weld other side, back weld arrow side.
46
Which colour is an indicator of a satisfactory weld on stainless steel?
A) Red.
B) Golden.
C) Shiny black.
D) Salmon Pink.
D) Salmon Pink.
47
It is essential to clean stainless steel surfaces prior to any welding. Which of the following is NOT an
appropriate cleaning method or mechanism?
A) Steel wool.
B) Aluminum oxide grinding discs.
C) Stainless steel wire brushes.
D) Some detergents or degreasers.
A) Steel wool.
48
What is the normal flow rate in L/min required for GTAW?
A) 15.8-16
B) 13.7-15
C) 7.3-14
D) 5.8-16
D) 5.8-16
49
Which of the following methods is NOT used for preparation of GTAW electrodes?
A) Chemical compounds.
B) Grinding.
C) Electric arc.
D) Hammering.
D) Hammering.
50
What is an inverted rectangular shape of consumable insert used for?
A) For pipe sizes greater than 50mm.
B) For allowing greater joint misalignment:
C) For joining Vee or U groove designs butt joints.
A) For pipe sizes greater than 50mm.
51
Gasses designed for GTAW generally contain oxidizing gases and therefore, are not suitable for GMAW.
A) True
B) False
B) False
52
In the GTAW process, which of the following would be the cause of an overheated torch and cables?
A) Coolant pump failure.
B) Failed gas valve solenoid.
C) Joint too narrow.
D) Inadequate shielding gas flow.
A) Coolant pump failure.
53
What is a disadvantage of hydrogen shielding gas?
A) Highly flammable.
B) Reactive nature can lead to weld contamination.
C) Arc start time more difficult.
D) It tends to undercut at bead sidewalls.
A) Highly flammable.
54
What is a characteristic of a 300 series stainless steel?
A) It has non magnetic properties.
B) It has a ferritic micro structure.
C) It has no resistance to corrosion.
D) It has very low impact toughness.
A) It has non magnetic properties.
55
If the arc length is too long when using a E-4918 electrode, porosity may occur in the weld.
A) True
B) False
A) True
56
What is the recommended voltage polarity for a E-4310 3.2 mm SMAW electrode?
A) DC current EP polarity
B) AC current EP polarity
C) DC current EN polarity
D) AC/DC current EP polarity
A) DC current EP polarity
57
What is an advantage of argon shielding gas used on carbon steel under machine conditions?
A) Better penetration for welding of thick sections.
B) Ease of manipulation and overheating.
C) High weld speeds possible.
D) It permits controlled penetration on thin gauge material.
B) Ease of manipulation and overheating.
58
The term cold lap is used to describe a weld fault that is more common in the ____ process.
A) SMAW
B) GMAW
C) FCAW
D) SAW
B) GMAW
59
What is impact wear?
A) It is a pounding battering type of wear.
B) It is seizing or galling that rips or tears.
C) It is a type of wear that washes away or grooves out the metal surface.
D) It is a type of wear that pits and perforates.
A) It is a pounding battering type of wear.
60
An EWG electrode:
A) contains about 2% cerium oxide.
B) contains about 2% lanthanum oxide.
C) is designed for direct current applications.
D) contains rare earth oxides.
D) contains rare earth oxides.
61
What is stringer fill?
A) It is a weld placed between two mating surfaces and used on butt joints.
B) It is a weld of short length used to hold parts in alignment.
C) It is a weld made with a series of overlapping stringer beads.
D) It is a weld made with side motion as well as in the direction of travel.
C) It is a weld made with a series of overlapping stringer beads.
62
The distortion found in welded fabrication is caused by ____ basic dimensional changes.
A) 6
B) 5
C) 4
D) 3
D) 3
## Footnote
Angular change: Causes rotation around the weld axis.
Bending: Occurs at various locations.
Expansion and contraction: Result from the heating and cooling cycle of the welding process.
63
With respect to weld symbols, the depth of fill for a plug weld is shown ____ the symbol.
A) inside
B) to the left of
C) to the right of
D) above
A) inside
64
What is the electrical charge of a proton?
A) Positive
B) Negative
C) Neutral
A) Positive
65
Causing a notch effect in a weld creates a point of weakness due to:
A) intermittent stress on the weld.
B) interruption of the stress flow lines.
C) the weld joint having distortion.
D) applying tensile stress on the weld.
B) interruption of the stress flow lines.
66
Site plans are generally drawn at a scale of:
A) 1:1
B) 1 :10
C) 1:100D
D) 1:50
C) 1:100D
67
Slag inclusions can be described as:
A) non metallic liquids found in welds.
B) non metallic solids found in welds.
C) hot molten.
D) all of the above apply.
B) non metallic solids found in welds.
68
Using the AISI classification standard, which of the following numbers identifies a stainless steel with nickel and manganese added?
A) 400
B) 300
C) 200
C) 200
69
What are the two main sub-particles that may be found in the nucleus of an atom?
A) Protons and electrons.
B) Protons and neutrons.
C) Neutrons and electrons.
D) Atoms and valence shells
B) Protons and neutrons.
70
Which of the following divisions is not typically in a set of blueprints for a building project?
A) Architectural
B) Structural
C) Heating
D) Mechanical
C) Heating
71
According to the ASME code for welding positions the letter "F" stands for:
A) Fillet weld
B) Factory Weld
C) Finished Weld
D) First Pass
A) Fillet weld
72
Which of the following indicates a flat position fillet type weld?
A) 1G
B) 1F
C) 2G
D) 2F
B) 1F
73
Referring to the figure, which location would show the number of spot or projection welds on a welding symbol?
A) 10
B) 8
C) 5
D) 2
B) 8
74
Referring to the figure, which location would show the basic weld symbol or detail reference?
A) 12
B) 11
C)9
D)2
A) 12
75
Which of the following gasses has the most heat per cubic meter?
A) Acetylene
B) Propane
C) Natural Gas
D) Mapp Gas
B) Propane
76
What is a weave bead?
A) It is a procedure to minimize crater cracks.
B) It is a weld of short length used to hold parts in alignment.
C) It is a technique used to build up wear surfaces.
D) It is a weld made with side motion as well as in the direction of travel.
D) It is a weld made with side motion as well as in the direction of travel.
77
Which of the following is true with respect to stainless steel?
A) Tensile and yield strengths depend on chemical composition.
B) Thermal conductivity is greater and thermal expansion is less.
C) They are less resistant to oxidation at high temperatures.
D) Distortion during cooling is less than non stainless steel.
A) Tensile and yield strengths depend on chemical composition.
78
When conditioning electrodes, excessive currents can cause the arc to wander over the end of the electrode.
A) True
B) False
B) False
79
Prior to use, all filler metals should be protected from moisture.
A) True
B) False
A) True
80
How can spalling be defined?
A) Unbalanced stresses created during uneven expansion and contraction.
B) The breaking away of a weld metal from the base metal.
C) The mixing of base metal with the hard facing filler metal.
D) Cracking that occurs in the base metal under the weld.
B) The breaking away of a weld metal from the base metal.
81
What is meant by the 'tie-in' points?
A) The point where crater filling becomes flush with the original material.
B) The leading edge of the puddle as it progresses forward.
C) The point where the filler rod feeds into the front of the puddle.
D) The point where the weld starts and stops.
D) The point where the weld starts and stops.
82
Pure aluminum:
A) is white to gray colored with a smooth velvet texture.
B) has a rough, dull gray surface appearance.
C) is usually a silver-gray to gray color.
D) oxidizes rapidly and often has a thin oxide film.
D) oxidizes rapidly and often has a thin oxide film.
83
A welder is responsible for connection of the welding machine to the electrical panel.
A) True
B) False
B) False
84
What is the maximum current rating for a water-cooled GTAW torch?
A) 700
B) 525
C) 200
D) 150
A) 700
85
What is the property of an electrical circuit that allows you to transfer current into a neighbouring body without physical contact?
A) Resistance
B) Inductance
C) Insulator
D) Electron
B) Inductance
86
# ```
```
As a general rule, when using GTAW on stainless steel it is advisable to add filler rod to all welds, even when it appears unnecessary.
A) True
B) False
A) True
87
Which of the following electrodes is most commonly used when using GTAW process on mild steel?
A) EWCe-2
B) EWTh-1
C) EWTh-2
D) EWLa-1
C) EWTh-2
88
When doing mild steel pipe preparation for GTAW, what is the suggested included joint angle?
A) 10 - 25 degrees
B) IS - 30 degrees
C) 30 - 45 degrees
D) 60 - 75 degrees
D) 60 - 75 degrees
89
The most common equipment used for joint preparation on mild steel pipe is a pipe beveller and a/an:
A) grinder
B) oxy-fuel tourch
C) #4 file
D) PAC
B) oxy-fuel tourch
90
Austenitic manganese steel as a filler material:
A) is used for bearing surfaces and ship propellers.
B) is used for coal handling equipment.
C) is best suited for resistance to abrasion.
D) is good for resistance to impact.
D) is good for resistance to impact.
91
As a general rule, with steel a finer grain structure makes a stronger weld.
A) True
B) False
A) True
92
With GTAW welding, electrode inclination should be at zero to _____ degrees forehand for all positions.
A) 50
B) 40
C) 30
D) 20
C) 30
93
A 6 meter ladder is leaned against a wall so that the bottom of the ladder is 3 meters from the wall. The
ladder will reach ________ meters up the wall.
A) 6.7
B) 5.2
C) 3.6
D) 3.0
B) 5.2
94
Circles are divided into ________ equal divisions called degrees.
A) 720
B) 360
C) 180
D) 60
B) 360
95
Which of the following is the Top View of the above figure?
A)
96
What is the primary cause of porosity in aluminum welds?
A) Oxygen.
B) Galvanic corrosion.
C) Anode corrosion.
D) Hydrogen.
D) Hydrogen
97
The scale on a drawing is 1:5.
The scaled length of a shaft is 4 1/8 inches long.
The actual length of the shaft will be ________ inches long.
A) 26 ¼
B) 15 5/8
C) 20 5/8
D) 20 7/8
C) 20 5/8
98
Which of the following materials would be best suited for making a Sweep template?
A) Iron.
B) Heavy paper.
C) Aluminum.
D) Steel.
D) Steel
99
Most SAW power sources are rated at 100% duty cycle because of the:
A) low current process.
B) requirement to run it without ever stopping.
C) low voltage process.
D) high current process.
D) high current process.
100
What is the angle of a triangle that has a rise of 14 and a run of 18?
A) 52.0
B) 42.0
C) 37.8
D) 26.5
C) 37.8
101
Which of the following describes annealing?
A) It is done by thermal or mechanical treatments.
B) It is usually done at 93 degrees Celsius.
C) It is the heating of ingots of heat treatable wrought alloys.
D) It is used to bring metal into a soft workable condition.
D) It is used to bring metal into a soft workable condition.
102
The correct positioning of the flowmeter is when it is mounted:
A) horizontally.
B) vertically.
C) at a 45 degree angle to the tank.
D) at a 90 degree angle to the tank.
B) vertically.
103
When making an isometric drawing, which of the following is true?
A) The horizontal planes always recede at 30 degrees.
B) It has the disadvantage of showing only two directions.
C) The depth of the object is reduced to 75% of scale size.
D) The receding edges are drawn parallel usually at a 45 degree angle.
A) The horizontal planes always recede at 30 degrees.
104
When welding at a given speed, what effect will increasing the amperage cause?
A) A thicker, higher bead with deeper penetration.
B) A narrower, lower bead with thinner penetration.
C) A thicker, lower bead with thinner penetration.
D) A narrower, higher bead with deeper penetration.
D) A narrower, higher bead with deeper penetration.
105
Single line layout is normally accompanied by a stylized _____ to denote the scrap side of the cut.
A) P
B) L
C) S
D) W
C) S
106
Which of the following joint preparations for a corner joint requires only one member of the joint to be
prepared?
A) Single Vee Joint
B) Single U Joint
C) Double J Joint
D) Double C. Joint
C) Double J Joint
107
Which gas does NOT have a pressure of 18.2 MPa at 21 degrees C?
A) Argon
B) Carbon dioxide
C) Hydrogen
D) Nitrogen
B) Carbon dioxide
108
An orthographic view is an imaginary depiction of a portion of an object.
A) True
B) False
B) False
109
Which techniques is most commonly used for marking clean steel in preparation for flame cutting?
A) Stamping.
B) Contour marker.
C) Soapstone.
D) Prick punch.
C) Soapstone.
110
On a SAW system an increase in output voltage results in a _____ arc.
A) longer
B) shorter
A) longer
111
When specifying L shape structural steel with legs of unequal length the longer leg is always listed first.
A) True
B) False
A) True
112
Calculate the total cost of 2 inch by ½inch by 1/8 inch channel iron required for the fabrication of the shape
shown in the above figure (material cost 40 cents per foot).
A) $33.32
B) $30.86
C) $26.65
D) $22.96
C) $26.65
113
Using Pythagorean theorem, calculate side "C" if side "A" equals 149.01 and side "B" equals 118 (side A is the hypotenuse).
A) 111.0
B) 91.0
C) 88.0
D) 74.0
B) 91.0
114
The structural shape drawn in the figure is know as a:
A) S shape
B) W shape
C) C shape
D) L shape
B) W shape
115
What is the common width in mm for arrowheads on a blueprint?
A) 6-8
B) 5-6
C) 2-3
D) 1-1.5
D) 1-1.5
116
Each pressure vessel must have an identifying nameplate attached at some conspicuous location on the vessel.
A) True
B) False
A) True
117
What is the total labour cost for a job that requires one journeyman at $31.5 dollars per hour for six hours, and one first year apprentice at $15.25 per hour for 5 hours? (add 15% for holiday pay, EI, WCB, CPP)
A) $405.45
B) $315.5
C) $305.03
D) $265.25
C) $305.03
118
The main function of the contact tube is to:
A) provide a path for coolant.
B) transfer electrical current to the electrode.
C) make contact with the welders hand.
D) connect the welder to the power supply.
B) transfer electrical current to the electrode.
119
When distinguishing between an aluminum ER4043 and an ER5356, which one makes a high pitched sound when dropped on concrete?
A) ER4043
B) ER5356
B) ER5356
120
What will too short of electrode extension on FCAW cause?
A) The current to decrease.
B) Splatter build up on the nozzle.
C) The arc voltage to increase.
D) Irregular arc action.
B) Splatter build up on the nozzle.
