WELD 121 Practice Test

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• What is a key safety practice when handling compressed gas cylinders for welding?
• How should gas cylinders be stored safely?
• Which term refers to the basic equipment needed to weld with oxygen and fuel gas?
• Which statement about acetylene storage safety is supported by the material?
• Back purging in stainless steel welding is used to prevent oxidation and chromium oxide formation at the weld root.
• What bead appearance indicates good quality?
• In a fillet weld, the leg and throat refer to:
• What is arc blow and how can it be prevented?
• The AWS electrode code E6010 indicates which type of electrode?
• A dewar flask is used to ship which substance?
• How does arc length affect heat input and weld quality?
• A __ safely ignites the torch flame?
• What device is commonly used to ignite the oxyacetylene flame?
• Which statement best describes the liquefying process as presented?
• Which process uses a non-consumable tungsten electrode?
• Welding goggles are defined as which of the following?
• What is the purpose of tack welds?
• Two or more cylinders are connected in line in an oxyacetylene system.
• A match should be used to ignite the oxyacetylene flame.
• Which item is essential PPE for protecting eyes and face during welding?
• How is a field weld indicated on a welding symbol?
• In a multi-pass weld, which statement correctly describes the root pass and fill passes?
• Acetylene cylinders are filled with acetone and a filler material such as wood.
• Hydrogen-induced cracking is most likely to occur in which type of steel?
• What occurs during electrolysis of water?
• Which term describes the process that removes metal from the surface of a part to a desired depth?
• What is a practical interpass temperature guideline for plain carbon steel?
• How can you tell a weld is meant to be performed in the field based on the welding symbol?
• Explain post-weld heat treatment (PWHT) and when it is used.
• Which device is used to regulate gas flow from the cylinder to the welding area?
• Which statement best describes the 4G welding position?
• When selecting a filler metal for welding a carbon steel joint, which factors are most important?
• Dilution primarily affects which aspects of the weld?
• What are slag inclusions and how do they occur?
• Which term refers to ball-shaped particles of molten metal?
• What is the common purpose of a backing bar or backing weld?
• What safety considerations are important when handling compressed gas cylinders for welding?
• Which combination is stated as making up acetylene production?
• A flint and steel spark lighter is generally used to light the oxyacetylene flame?
• An oxygen cylinder is pressurized to __ pounds?
• A __ controls the flow of gas at the welding?
• Which type of cut is associated with preparing parts with specific shapes or curves?
• What information does a groove weld symbol indicate on a drawing?
• What does root opening refer to in groove welds?
• Which electrode is commonly used for structural stick welding?
• The hose nuts for oxygen and acetylene differ, because the acetylene hose nut?
• Which statement best aligns with the Dewar flask's use in the material?
• Specifications for the construction of oxygen cylinders are prepared by which body?
• What is liquefaction?
• GMAW stands for which welding process?
• Hydrogen content in welding is a concern because hydrogen can cause hydrogen-induced cracking; how is it controlled?
• Which shielding gas provides deeper penetration in GMAW?
• What is the primary purpose of personal protective equipment (PPE) in welding safety?
• Radiographic testing is commonly used to detect which type of weld defect?
• Shape cutting describes cuts that can follow any pattern or curvature.
• Which term refers to the basic equipment needed to weld with oxygen and fuel gas?
• Which filler metal classification is commonly used for 316 stainless?
• An acetylene cylinder is usually filled with acetone and a monolithic filler or balsa wood before acetylene gas is pumped into it?
• Globules are defined as ball-shaped particles of molten metal, which term?
• Which substance is described as being stored in a Dewar flask in the material?
• Oxygen cylinders are packed with a porous material to store oxygen safely?
• What is the function of flux in FCAW and SMAW?
• Which shielding gas mixes improve arc stability and reduce spatter?
• A __ prevents a flashback from reaching the manifold system?
• What does weld penetration refer to?
• An excessively wide root gap in welding most likely leads to which issue?
• What is crater cracking and how can it be prevented?
• Right hand threads are always used on connections for acetylene hoses.
• Arc blow is mitigated by which practice?
• What is dilution in welding and how does it affect the weld?
• What is the purpose of slag removal between passes in SMAW?
• Which control best mitigates UV/IR radiation hazards in welding?
• Which practice is commonly used to minimize hydrogen cracking in carbon steel welds?
• What is an undercut, and what conditions typically cause it?
• What does CJP stand for in weld design?
• Which type of cut is most commonly referenced as a cut performed during welding tasks rather than machining?
• Which component is used to fine-tune gas flow by turning a small screw on some equipment?
• Why is filler metal selection important for weld quality?
• What is the purpose of post-weld cleaning and surface preparation after welding?
• Define a fillet weld and a groove weld.
• The higher the welding torch tip number, the larger the tip opening is.
• A Dewar flask is commonly used as a vessel for storing what?
• What is the purpose of a groove weld?
• What is a root gap and why is it important?
• Which factor does not determine the rate at which acetylene can be drawn from a cylinder?
• Which statement describes a lack of penetration defect?
• What causes porosity in a weld, and how can it be prevented?
• Which process is commonly used for general fabrication and rapid production?
• What safety device is generally used on an oxygen cylinder?
• What does "fit-up" refer to in welding?
• Which part of a gas welding system is the source of gas under high pressure that is released through the regulator?
• What is the difference between continuous welds and stitch welds?
• Which term describes intersecting the pipe at a single point to the inner circumference of the pipe?
• Acetylene production is made up of which components?
• What is weld bead wetting, and why is it important?
• In SMAW, the flux on the electrode produces shielding gases and slag.
• Which statement correctly describes slag behavior in flux-core arc welding compared to shielded metal arc welding?
• Which welding process and current type are commonly used for aluminum welding, and why?
• Which statement correctly differentiates DCEN and DCEP in arc welding?
• Hydrostatic pressure is caused by which factor?
• Which filler metal classification is commonly used for 304 stainless in MIG welding?
• What is the primary function of shielding gas in welding?
• Which safety device is used on an oxygen cylinder?
• Which arrangement connects two or more cylinders in line for gas delivery?
• What are two common power source types used in welding equipment and how do they differ in arc stability?
• Which statement best describes the typical PPE package for welding?
• How does brazing differ from welding?
• Which preheat ranges are commonly used for carbon steel to minimize hydrogen cracking?
• Which statement best describes the 2G welding position?
• What is the purpose of the root pass in a multi-pass weld?
• Which statement best distinguishes FCAW from GMAW?
• A __ controls the flow of gas from the cylinder?
• How is fillet weld size specified on a symbol?
• Using acetone to absorb acetylene allows storage at safe pressure.
• Which statement best defines a fillet weld and where is it commonly used?
• What is porosity in a weld and what are common causes?
• The Dewar flask is best described as which of the following?
• What is the primary purpose of post-weld heat treatment (PWHT)?
• What shielding gas is commonly used for GMAW of carbon steel, and what are typical mixes?
• Shade numbers commonly used in oxyacetylene welding goggles are 10,11,12?
• GTAW stands for what welding process?
• What determines the rate at which acetylene can be drawn from a cylinder?
• To prevent the occurrence of flashbacks, a __ should be installed between the regulator and the hose, and/or between the torch and the hose?
• In SMAW, what does the filler electrode provide?
• What do 1G, 2G, 3G, and 4G welding positions describe?
• Which factors of shielding gas influence weld quality?
• Why is precleaning base metal important before welding?
• In a multi-pass weld, which pass finishes the weld and provides surface appearance?
• In AWS electrode code E6010, what does the "60" indicate?
• An oxygen cylinder must withstand a hydrostatic pressure of 3300 psig to be qualified for service?
• The term 'liquefying' as used in the material most closely describes which action?
• Name two common nondestructive testing methods used to inspect welds.
• Which device is designed to prevent flame flashback in oxy-fuel systems?
• Which term describes the cutting of bevels on the edges of steel plate for bevel and v-groove joints prior to welding?
• The pressure in a static liquid increases with depth due to which cause?
• What is a root gap, and how does it affect weld quality?
• Hydrogen-induced cracking is most likely to occur under which conditions?
• What technique helps prevent crater cracking at the end of a weld bead?
• Which part is typically found on the regulator assembly and is used to adjust output pressure to the torch?
• Mixing calcium carbide and water will produce acetylene gas?
• Why is hydrogen content considered when selecting a filler metal for carbon steel welding?
• What is the maximum safe working gauge pressure for acetylene gas?
• What is the primary purpose of shielding gas in welding?
• Regulators must be carefully handled to prevent possible damage?
• In brazing, the filler metal melts at what temperature relative to the base metals?
• Shade numbers commonly used for oxyacetylene goggles are 10, 11, and 12.
• Which statement best describes a butt joint?
• How is a groove weld symbol on a drawing interpreted in terms of the weld approach?
• What safety device is used on an acetylene cylinder?
• What is undercut and how can it be prevented?
• Acetone absorbs large amounts of acetylene, allowing storage of gas at a safe pressure.
• In GTAW of aluminum, why is alternating current (AC) commonly used?
• A __ mixes oxygen and acetylene?
• What is the backstep technique and when would you use it?
• What is fusion welding?
• An oxygen cylinder contains __ cubic feet of oxygen?
• What is the approximate tensile strength associated with the E6010 electrode?
• In groove weld edge preparation, what is the purpose of the root face?
• The process described as liquefying involves which action?
• In aluminum welding, how do TIG and MIG shielding gas usage differ?
• What bevel angle is typical for groove welds in carbon steel?
• Which term describes a cut produced by processes other than welding that is typically done by a machine?
• Which statement best distinguishes flux-core welding from SMAW in terms of deposition rate?
• Which device on equipment prevents the backflow of gas toward the cylinder?
• Petroleum products, such as grease or lubricating oil, may burn easily in the presence of oxygen.
• How does interpass temperature influence distortion and weld quality?
• If shielding gas flow is too low, which defect is likely?
• In welding procedure qualification, which of the following is most accurate?
• What is a crater crack and how can it be prevented?
• Which NDT method uses sound waves to detect internal weld defects?
• Which process is used for high-quality, precise welds on stainless steel and aluminum?
• Which filler metal classification is used for stabilized grades?
• No part of an oxygen cylinder wall may be thinner than?
• What surface preparation is recommended for aluminum prior to welding?
• Left hand threads are on all connectors for acetylene gas?
• The part used to increase or decrease the gas pressure delivered to the torch from the regulator?
• How does the heat-affected zone affect steel grain structure and hardness?
• Which statement is not a characteristic of liquefaction by compression and cooling?
• Which term describes cutting with a torch that is moved by a machine but adjusted by the operator?
• How does heat input influence distortion and residual stress in welded joints?
• Identify the three basic welding processes typically introduced in an introductory welding course.
• Gouging is best described as the process that removes metal from the surface of a part to a desired depth.
• Complete Joint Penetration describes a weld that:
• Which sequence correctly describes recommended surface preparation for aluminum prior to welding?
• Which of the following is a common weld defect?
• Which gas is produced when calcium carbide reacts with water?
• Cylinders should be chained in a vertical position?
• What microstructure can result from faster cooling in the heat-affected zone of steel?
• Which power source type is generally associated with lighter equipment and more stable arcs?
• What is the primary purpose of using a cylinder cart when transporting gas cylinders?
• Dewar flask is used to ship which substance?
• Which term describes cutting with a torch that is held and moved by a mechanical device and adjusted manually?
• How does preheating reduce hydrogen cracking?
• Which component guards against damage to the cylinder valve?
• Which NDT method is most effective for detecting internal weld porosity?
• Which statement correctly describes the use of flux in FCAW and SMAW?
• Which of the following is NOT a common cause of porosity in SMAW welds?
• Which set lists common welding positions used in introductory welding?
• Define preheat and interpass temperature; why are they used?
• Which is a common welding defect and its cause?
• Acetylene becomes unstable if compressed to more than 15 psi.
• What is one primary reason preheating is used in welding high-strength steels?
• Which welding process offers high deposition rates and is suitable for field repairs?
• Which welding technique is commonly used to control distortion and heat input in a long joint?
• Which term refers to the full setup including the outfit, welding table, ventilation, and lighting for welding safety and comfort?
• The spark lighter is used to:
• What does AWS D1.1 cover?
• Which term refers to pieces of leather that cover the shin and top of the shoe to protect against splashes of molten metal and sparks?
• What is the heat-affected zone (HAZ)?
• Lack of penetration is best described as:
• What is the purpose of preheating carbon steel before welding?
• How many NDT methods are listed as used to inspect welds in the material?
• Which of the following is NOT a common cause of porosity in welds?
• What is the purpose of welding symbols on blueprints?
• Which term refers to the oxyfuel gas welding station, including the outfit, a welding table, ventilation, lighting, and other equipment for welding safety and comfort?
• Which non-destructive testing method uses a magnetic field to detect surface and near-surface discontinuities?
• The regulator is closed when the adjusting screw is turned out (counterclockwise)?
• What is interpass temperature and what is a typical limit for many carbon steels?
• Which statement about acetylene hose nuts is true?
• The oxygen regulator gauge is marked with a warning color above the 15 psi point.
• Which welding process is often taught first in many introductory courses?
• Define ductility and explain its importance in welded joints.
• What is the heat-affected zone (HAZ) and why is it important in welding?
• What is a root pass in pipe welds?
• Why is heat input important in welding?
• Which substance absorbs acetylene to allow safe storage?
• Which group of welding processes are commonly covered in a basic welding course as shielded metal arc or arc welding processes?
• Why is proper root opening and gap control critical for groove welds?
• Which practice helps prevent porosity due to moisture in electrode coating?
• What is the primary purpose of shielding gas in welding?
• Which statement best explains the risk associated with excessive interpass heating?
• What is a consequence of excessive heat input during welding?
• Which statement about post-weld heat treatment and its purpose is true?
• Hydrogen cracking is more likely to occur in which scenario?
• Which of the following is NOT a common welding position?
• How do alloying elements affect weld metal properties? Give an example.
• What is the recommended orientation for storing gas cylinders to enhance safety?
• Hydro-static pressure is defined as which of the following?
• Which of the following is a common groove weld bevel type?
• Regulators should be greased or oiled occasionally to guarantee smooth operation.