exam 3 Flashcards by Tara-lee Gardner

_____ is defined as the amount of tension that a test piece of material can withstand before it breaks.
A) Brittleness
B) Tensile strength
C) Elasticity
D) Ductility

B) Tensile strength

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When storing an opened package of low hydrogen electrodes, the rod oven should be set at approximately 30 to _____ degrees Celsius above ambient temperature.
A) 35
B) 40
C) 100
D) 140

D) 140

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As covered in the CSA, type Q steel is:
A) weldable notch tough steel.
B) quenched and tempered low alloy steel plate.
C) atmospheric corrosion resistant steel.
D) general construction steel.

B) quenched and tempered low alloy steel plate.

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The AWS electrode E7018M is intended to meet most military requirements.
A) True
B) False

A) True

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After a stop to change electrodes, where is it appropriate to restart the electrode?
A) On the bead prior to the final crater.
B) Within the final crater.
C) In an area of the weld zone which has yet to be melted.
D) Anywhere on the surface to be welded.

C) In an area of the weld zone which has yet to be melted.

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How often should you inspect your fall arrest equipment?
A) At the beginning of every shift
B) At least once a week.
C) At least once a month.
D) Only once you have fallen with it.

A) At the beginning of every shift

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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.

D) All of the above could cause uneven loading on sling legs.

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What is an advantage of synthetic fibre slings over wire rope slings?
A) Synthetic fibre slings arc stronger.
B) Synthetic fibre slings arc not damaged by sunlight.
C) Synthetic fibre slings cause less damage to the loads.
D) Synthetic fibre slings are not damaged by ultraviolet light rays.

C) Synthetic fibre slings cause less damage to the loads.

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What are two ways to prevent carbide precipitation?
A) limit the carbon level and add stabilizers.
B) limit the silicone level and add stabilizers
C) add silicone and stabilizers
D) Add chromium and limit the nickel level

A) limit the carbon level and add stabilizers.

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The PAC process provides low heat input into the base metal.
A) True
B) False

A) True

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The safe handling of materials is the responsibility of:
A) WHMIS.
B) WCB.
C) El.
D) yourself.

D) yourself.

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When performing SMAW welds, slag should not be removed from the root pass.
A) True
B) False

B) False

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The system of classification adopted by the SAE and AISI uses an index where the number 5 refers to:
A) chromium steels.
B) nickel chromium steels.
C) tungsten chromium steels.
D) plain carbon steels.

A) chromium steels.

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The diameter of a coated electrode is determined by the diameter of the core wire only.
A) True
B) False

A) True

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When preparing 9.6 mm mild steel coupons for a single V butt joint in the 3G position using SMAW, what is the recommended angle to bevel the material?
A) 20 degrees
B) 30 degrees
C) 40 degrees
D) 60 degrees

B) 30 degrees

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Compared to low carbon steel, stainless steel has a lower thermal conductivity.
A) True
B) False

A) True

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FCAW low alloy steels electrodes use the suffix letter “D” to refer to:
A) military specifications electrodes.
B) carbon molybdenum electrodes.
C) low alloy electrodes.
D) manganese molybdenum electrodes.

D) manganese molybdenum electrodes.

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ln compliance with WHMIS, material data sheets must be reviewed and updated every ____ year(s).
A) four
B) three
C) two
D) one

B) three

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When referring to the torch inclination of a cutting torch you can say that it is the angle of the torch relative to the:
A) direction of travel.
B) metal angle.
C) angle of weld.
D) torch tip.

A) direction of travel.

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What is the recommended amperage range for a E4311 3.2 electrode when performing a 3G butt weld?
A) 70 - 100 Amps
B) 80 - 140 Amps
C) 50 - 100 Amps
D) 90 - 130 Amps

D) 90 - 130 Amps

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What electrode is used for welding high strength pipe such as APlX52?
A) E490-G
B) E4910-AI
C) ER80S-D2
D) E81T1-B2

B) E4910-AI

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If a fuel gas connector has a groove cut around it this is an indication that it is:
A) a right hand thread.
B) a left hand thread.
C) an oxygen fitting.
D) defective fitting.

B) a left hand thread.

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With constant current type welding machines, what voltage range is normally needed to initiate an arc?
A) 17 - 40 volts
B) 50- 100 volts
C) 100 - 120 volts
D) 200 - 400 volts

B) 50- 100 volts

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An indication that you are using a ____ is a rough cut with slag accumulating on the bottom edge.
A) dirty tip
B) rich mixture
C) magnetic tracer
D) poor grade of fuel

A) dirty tip

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Using the AWS Classification System, what does the 49 in E491 stand for? A) 60 degrees B) 60,000 pounds per square inch C) 60 cycles per second D) 60 rods per day

B) 60,000 pounds per square inch

What product does CSA write specifications for? A) Structural steel plate and shapes. B) Steel sheet stock. C) Steel bar stock.

A) Structural steel plate and shapes.

It is possible to use thinner sections of low alloy steels compared to plain carbon steels because of their enhanced mechanical properties. A) True B) False

A) True

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.

C) It is the ultimate pull a material will stand without fracture.

A nickel alloy is an alloy that contains more than ____ percent nickel. A) 20 B) 40 C) 50 D) 60

C) 50

It is critical that you check the ____ rating of a grinder when replacing the grinding wheel. A) amperage B) voltage C) temperature D) revolution per minute

D) revolution per minute

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

You can identify chisels by the: A) color of the metal. B) overall length of the chisel. C) weight of the chisel. D) shape of the cutting edge.

D) shape of the cutting edge.

An electronic tracer-guided cutting machine will use a ____ to sense the change in direction on a pattern. A) knurled magnetic stylus B) hand guided control arm C) photoelectric cell D) signal sent from a computer

C) photoelectric cell

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.

When preparing 9.6 mm mild steel coupons for a 4GF SMAW weld with backing, how are the coupons prepared? A) Both are beveled to 30 degrees. B) One coupon is beveled to 30 degrees and the other is beveled to 90 degrees. C) One coupon is beveled to 30 degrees and the other is beveled to 60 degrees. D) Both coupons are beveled to 45 degrees.

B) One coupon is beveled to 30 degrees and the other is beveled to 90 degrees.

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.

D) When welding thinner material, the fill and cap pass can be one and the same.

The flat position for a weld is known as: A) 1G B) 2G C) 4G D) 2F

A) 1G

When cutting shapes with a torch you should use ________ inclination. A) major forehand B) slight backhand C) major backhand D) practically no

D) practically no

What carbon class would axles be made of? A) Low. B) Mild steel. C) Medium. D) High.

C) Medium.

What is a disadvantage of helium shielding gas? A) Highly flammable. B) Reactive nature can lead to weld contamination. C) Arc start time more difficult. D) lt tends to undercut at bead sidewalls.

C) Arc start time more difficult.

A jig is n fixture or device made up for the express purpose of aligning and holding parts of a weld.

A) True B) False

When a metal is melted, how many types of expansion are encountered? A) 4 B) 3 C) 2 D) 1

B) 3

Referring to the figure, which of the following weld symbols is a single V butt weld with a convex profile? A) #6 B) #5 C) #4 D) #3 E) #2 F) #1

F) #1

Which of the following is connected directly to the AC input power line? A) The rectifier. B) The primary coil. C) The secondary coil. D) The diode.

B) The primary coil.

The term overlap is a weld condition where metal extends: A) beyond the limits of fusion. B) into the root bead undercut. C) in the root opening. D) in the fill of groove welds.

A) beyond the limits of fusion.

When connecting the torch power lead to the torch power block, a left hand thread is used for air cooled torch cables. A) True B) False

B) False

What is the result when nickel is added to stainless steel? A) A decrease in electrical resistance. B) An increase in corrosion resistance. C) An increase resistance to pitting corrosion. D) An increased impact property.

B) An increase in corrosion resistance.

How many tacks should be used prior to welding pipe of 100 mm or smaller? A) 5 B) 4 C) 3 D) 2

C) 3

The effective throat of groove welds means the total thickness of material fused in the weld A) True B) False

A) True

In an atom, what are the particles that are in orbit around the nucleus called? A) Protons B) Neutrons C) Satellites D) Electrons

D) Electrons

What is the recommended amperage range for a E-4310 3.2 mm electrode? A) 60 - 100 Amps B) 80 - 100 Amps C) 80- 140 Amps D) 90 - 110 Amps

C) 80- 140 Amps

An EWLa-1 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.

B) contains about 2% lanthanum oxide.

Non-Ferrous metals do not have ____ as their major ingredient. A) magnesium B) cobalt C) nickel D) iron

D) iron

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.

How are tungsten electrodes sized? A) Length and mass. B) Diameter and length. C) Cmils and weight. D) Volume and hardness.

B) Diameter and length.

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

It is important to have a good quality tack welds when using SMAW on coupons, because they become part of the weld. A) True B) False

A) True

What is tailing out? 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.

A) It is a procedure to minimize crater cracks.

Using the AWS specification system for GTAW tungsten and tungsten alloy electrodes, what does the "W" stand for in EWTh-2? A) It indicates the electrode is primarily tungsten. B) It indicates the type of melting characteristic. C) It indicates the alloy mix. D) It indicates the manufacturer location.

A) It indicates the electrode is primarily tungsten.

When referring to the dimensions of weld symbols, the dimensions for the length of the weld are placed to the ____ of the weld symbol. A) right B) left C) top D) bottom

A) right

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

What is the core of an atom called? A) A proton B) A neutron C) The nuclei D) The nucleus

D) The nucleus

What is an inverted J 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.

B) For allowing greater joint misalignment.

What is the electrical charge of a proton? A) Positive B) Negative C) Neutral

A) Positive

In the GTAW process, which of the following would be the cause of porosity? A) Pinched or clogged cooling lines. B) Gas cylinders are closed. C) Joint too wide. D) Torch current carrying capacity too low.

B) Gas cylinders are closed.

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.

With the color code system for GTAW electrodes, what does the color black indicate? A) EWP B) EWCe-2 C) EWTh-1 D) EWLa-1

D) EWLa-1

What is a root pass? A) It is the first or penetrating bead. B) It is a technique of adding filler rod at intervals. C) It is a method of adding filler rod to the weld. D) It is a heavy pass designed to fill the groove.

A) It is the first or penetrating bead.

Which of the following abbreviations indicates cold rolled steel? A) CRN B) CRT C) CRS D) CO

C) CRS

Referring to the figure, which of the following is a flare bevel weld symbol? A) #4 B) #3 C) #2 D) # 1

B) #3

Referring to the figure, which of the following is a flare V weld symbol? A) #4 B) #3 C) #2 D) #l

A) #4

What is a stringer bead? A) It is a weld placed between two mating surfaces and used on butt joints. B) It is a single pass weld using no side to side motion. 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.

B) It is a single pass weld using no side to side motion.

Power cables should not be fastened too tight on machine lug connections. A) True B) False

B) False

A WPS document is supported by a PQR. What does PQR stand for? A) Procedure Qualification Record. B) Process Quality Report. C) Procedure Quality Report. D) Progressive Qualification Record.

A) Procedure Qualification Record.

Which of the following gasses has the most heat per cubic meter? A) Acetylene B) Propane C) Natural Gas D) Mapp Gas

B) Propane

A screw type work lead is normally used for machine and fully automatic operations where lower currents are used. A) True B) False

B) False

Which of the following electrical properties opposes the flow of current? A) amperage B) inductance C) voltage D) resistance

D) resistance

Which of the following is not one of the three basic elements of a blueprint? A) Dimensions B) Arrows C) Lines D) Notes

B) Arrows

The suggested tack weld length for doing SMAW welds on 150 mm diameter 9.6 mm thickness mild steel pipe is: A) 5 mm to 10 mm B) 10 mm to 15 mm C) 13 mm to 19 mm D) 19 mm to 25 mm

C) 13 mm to 19 mm

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

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.

As a general rule, the maximum material thickness for a double-welded square groove weld is ____ mm. A) 3.2 B) 2.3 C) 4.3 D) 6.4

D) 6.4

Which weld pass is most likely to crack due to rapid cooling? A) Root pass. B) Fill pass. C) Cap pass. D) Any pass where the weld has been stopped and started, again.

A) Root pass.

Using the AWS A5.21 classification, what does the "R" stand for in RWC2-20/30? A) The mesh size of the tungsten carbide granules. B) Filler metal is in a composite tubular form. C) Tungsten carbide as the principle alloying element. D) A welding rod.

D) A welding rod.

During a flame test, what is the melting temperature in degrees Celsius for brass? A) 1510 B) 1354 C) 1083 D) 885

D) 885

What is the most often used shielding gas for GTAW on mild steel? A) Oxygen B) Nitrogen C) Argon D) Radon

C) Argon

According to the ASME code for welding positions the letter "G" stands for: A) Groove weld B) Good Weld C) Gravity weld D) Granular weld

A) Groove weld

What is the result when molybdenum is added to stainless steel? A) An increase in electrical resistance. B) An increase in corrosion resistance. C) An increase resistance to pitting corrosion. D) An increased impact property.

C) An increase resistance to pitting corrosion.

What is compression wear? A) It is a pounding battering type of wear. B) It is a squeezing type of wear. 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.

B) It is a squeezing type of wear.

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

When selecting an equipment for flow rate accuracy, a single stage regulator/flow meter is recommended. A) True B) False

B) False

What is the recommended amperage range for a E-41010 3.2 mm electrode? A) 60 - 100 Amps B) 80- 100 Amps C) 65 - 140 Amps D) 90 - 110 Amps

C) 65 - 140 Amps

When drawing extension lines for a layout, the lines that run vertical to the arrow line should extend ____ mm past the arrow head. A) 6 B) 5 C) 4 D) 3

D) 3

3F is described as a vertical position fillet weld. A) True B) False

A) True

Which of the following is not one of the four weld types? A) Groove B) Fillet C) Butt D) Surface

C) Butt

Which of the following circles has an oval shape? A) Concentric B) Eccentric C) Ellipse D) Bound

C) Ellipse

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.

The following welding joint type is referred to as a ____ joint. A) flush corner B) open corner C) half open corner D) basic corner

A) flush corner

Shielded metal arc welding: A) is useful for thin materials but seldom used today. B) electrodes have a very active flux that forms a highly corrosive slag. C) is very successful for aluminum welding.

B) electrodes have a very active flux that forms a highly corrosive slag.

Which shielding gas has no effect on the chemistry of the weld metal? A) Reactive gases B) Inert gases

B) Inert gases

What is bum through caused by? A) Excessive current B) Root face being too small C) Too slow of travel speed D) All of the above

D) All of the above

Which of the following describes stress relieving? 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.

A) It is done by thermal or mechanical treatments.

Using Pythagorean theorem, calculate side "A" if side "C" equals 12 and side "B" equals 8 (side A is the hypotenuse). A) 16.2 B) 14.4 C) 12.6 D) 9.1

B) 14.4

Which gas is colourless, odourless and an oxidizing gas? A) Helium B) Carbon dioxide C) Oxygen D) Hydrogen

C) Oxygen

Dished heads of a pressure vessel are also called: A) torispherical heads B) ellipsoidal heads C) hemispherical heads D) circular heads

A) torispherical heads

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.

The following is a pipe fitting symbol for a: A) Cross Reducing B) Lateral C) Eccentric Reducer D) Tee Reducing

C) Eccentric Reducer

Which shielding gas is one of the most commonly used with GMAW on aluminum? A) Argon B) Oxygen C) Zeon D) Hydrogen

A) Argon

What is specific gravity? A) It is the ratio of weight of one substance compared to another. B) It is a measure of the speed at which heat flows through an object. C) It is the mass of a substance divided by its volume. D) It is a ratio used as a multiplier to compare the expansion and contraction of a substance under different conditions of heat.

A) It is the ratio of weight of one substance compared to another.

When referring to structural steel, the pitch is the center to center dimension between the holes along the same line. A) True B) False

A) True

What must happen to the amperage of a wire fed welding machine as the wire speed is increased? A) It must remain constant. B) It must increase. C) It must decrease. D) It will half every time the speed doubles.

B) It must increase.

What is the suffix for millimetres? A)MM B)mm C)Mm D) mM

B)mm

When using GTAW with AC current, the electrode and weld metal emit ____ quantities of electrons. A) equal B) unequal C) scattered

B) unequal

Which of the following information would not be found in the title block of a drawing? A) Name of the item B) date C) Drawing number D) weight of the item

D) weight of the item

What is the main function of the contact tube? A) To provide a path for coolant. B) To transfer electrical current to the electrode. C) To make contact with the welders hand. D) To connect the welder to the power supply.

B) To transfer electrical current to the electrode.

Calculate the amount of structural tubing required in feet, to fabricate the structure shown in the above figure. A) 187.43 B) 167.65 C) 113.24 D) 109.11

C) 113.24 ## Footnote 5² + 6² = 61² 61²= 7.8 7.8 x 4 = 31.24

The filler metals for GMAW are stated as B - G 49A 5 M G6 . What does the ''G" stand for? A) It designates the tensile strength. B) It designates a gas shielded metal arc welding process. C) It designates a minimum of -50 temperature for impact test. D) It designates the shielding gas used.

B) It designates a gas shielded metal arc welding process.

When using the CSA standard W48.01 filler metal classification system you see ER49S-X. What does the 49 stand for in the above classification? A) Electrode B) Rod C) Solid wire D) Minimum tensile strength

D) Minimum tensile strength

Which of the following is one of the basic welding joint types? A) Groove Joint B) Surface Joint C) Lap Joint D) Fillet Joint

C) Lap Joint

Pinching of the wire in a GMAW system could result in erratic wire feeding which causes A) a deep undercut. B) porosity. C) a stable arc. D) arc hunting.

D) arc hunting.