TIG Plate Welding Practice Test

These questions are part of the practice quiz. Start practicing

• Why is an inert shielding gas required for GTA welding?
• Porosity in mild steel welds is manifested as which of the following?
• The squarewave current provides the weld with which effect on the molten weld pool?
• In GTA welding low carbon steel, what is the correct pairing of tungsten shape and polarity?
• What angle to the plate surface helps prevent air from being pulled into the welding zone behind the rod?
• For better visibility, the torch in GTA welding may be angled at what range from perpendicular for better visibility?
• Which weld defect is characterized by gas pockets within the weld metal?
• Which welding technique helps minimize distortion by distributing heat input along the joint, such as alternating sides?
• Which method prevents porosity caused by dirty base metal?
• During a TIG root pass, the first parameter you typically set to control heat input is
• Which statement best describes a tungsten with added rare-earth elements in GTA welding?
• Which tungsten electrode option is most accurate for DC TIG welding of steel and AC TIG welding on aluminum?
• The carbon range for mild steel falls within which of the following ranges?
• In GTA welding, which scenario is a common reason to choose this process?
• Carbide precipitation occurs when carbon combines with chromium. Which of the following statements best describes this process?
• For consistent shielding gas delivery, how should tube- and ball-type flowmeters be oriented?
• Which electrodes have a current-carrying capacity similar to pure tungsten and can be used for both AC and DC welding currents?
• What is crater cracking, and how can you prevent it in TIG welding?
• In what scenario might the GTAW process be used to make only the root pass on a pipe weld?
• In AC welding, how is the heat distributed between the work and the tungsten?
• What is the recommended method for removing the oxide layer on aluminum just before TIG welding?
• Which statement about increasing positive balance (cleaning action) in aluminum TIG welding is true?
• How does AC balance influence aluminum TIG welding, and what are the typical effects of increasing cleaning action?
• In the GTAW process, why is contamination left in the metal deposited in the weld?
• If undercut occurs, how should it be corrected?
• Which combination is recommended for stainless steel GTAW: Low current with fast travel, etc?
• Which statement about DCEP is true?
• Which material's oxide layer can prevent the molten weld pool from flowing together, affecting bead fusion?
• Which unit is used to measure shielding gas flow rate in GTA welding?
• What is the function of the root pass in a multi-pass TIG weld on a plate joint?
• What property makes an inert shielding gas essential for GTA welding?
• Which tungsten alloy is used for both AC and DC and has a current-carrying capacity similar to pure tungsten?
• Why would a welder place the end of the filler rod in the weld pool as the weld is being stopped?
• As contamination increases in a stainless steel weld, the bead color becomes which?
• Which statement is true about breaking and remelting tungsten?
• How must tube- and ball-type flowmeters be mounted?
• For a 304 stainless plate, which filler metal class would be used?
• Which two factors are the main levers to control heat input in TIG welding?
• Which statement best describes the effect of slow erosion on weld quality?
• How does a gas lens improve shielding and what trend does it cause in gas consumption?
• Exceeding the maximum gas flow rates _____.
• In a stainless steel weld bead, higher contamination makes the bead color appear darker. Which of the following describes this change?
• In a multi-pass TIG weld, which pass provides the base for subsequent fill and cap passes?
• What is a butt joint and what edge preparation is commonly used for TIG welding a plate butt joint?
• What is the role of back shielding gas or backing material when TIG welding thick joints?
• What is the typical carbon range for mild steel?
• What is the effect of using a gas lens on shielding gas usage?
• DCEN concentrates about what fraction of its welding heat on the work and on the tungsten?
• Which waveform type is commonly used in GTA welding to influence arc characteristics?
• Which statement correctly describes how welding machine settings depend on tungsten size and machine type?
• Which filler metal class is commonly used for welding aluminum 5052 plate?
• Root gap is the gap between faces; typical root gaps range what?
• What is a recommended practice to avoid contamination when grinding tungsten electrodes?
• Flowmeters measure the flow rate of a shielding gas in which units?
• With _____, lack of cleanliness may cause the weld pool to show overheating or poor gas coverage.
• Which tungsten category is associated with enhanced electron emission relative to pure tungsten?
• In GTA welding, direct current electrode negative (DCEN) concentrates heat on which part?
• What is the correct tungsten shape for GTAW on low carbon steel?
• When welding stainless steel, how should filler metal be selected relative to the base metal?
• What is HF start in TIG welding, and what is its advantage?
• What AWS code covers structural welding of stainless steel plates?
• What is a likely consequence of too steep an angle of the torch relative to the work when TIG welding plate?
• Which tungsten tip shape is recommended for a GTA weld on low carbon steel?
• Root opening is defined as what?
• In GTAW, the arc temperature is around which Fahrenheit value?
• How can heat input be adjusted in practice when welding thick plate with TIG?
• The useful life of a ceramic nozzle in GTA welding is affected by which factor?
• Tungsten contamination in a weld should be addressed because it causes what outcome?
• Which filler metal would you choose for welding a carbon steel plate that will later undergo structural service?
• Why does contamination tend to be deposited in the GTAW weld when there is no flux to remove it?
• The postflow period protects the molten weld pool, the filler rod, and the tungsten electrode as they cool to a temperature at which they will not oxidize rapidly. What is this protective phase called?
• Which factor does not directly control heat input in TIG welding?
• According to the text, porosity can form due to which internal condition?
• Which method prevents porosity caused by oil/grease contamination?
• Which adjustment would typically increase heat input?
• Which filler metal is suitable for a 316 stainless steel base metal?
• Tungsten electrodes that contain elements such as lanthanum or yttrium are referred to as which?
• Differentiate between groove welds and fillet welds in plate welding.
• An oxide layer on aluminum is _____, while on iron it is _____.
• If a TIG welder needs to qualify, what three documents are typically required?
• What is a common method to store filler rods to prevent moisture uptake?
• Which polarity should be used with the recommended tungsten on low carbon steel GTAW?
• Which designation pair represents the flat plate welding position?
• With _____, cleanliness is a critical factor.
• Which polarity results in welds with deep penetration and allows for a smaller-size tungsten to be used?
• In TIG welding, heat input is primarily controlled by amperage and travel speed; which of the following is a direct way to reduce heat input?
• Which AWS aluminum TIG filler metal designations are commonly used, and what do the letters indicate?
• For welding aluminum 5052 plate, which filler metal class is commonly used?
• GTA welding is particularly advantageous when which requirement is present?
• Which statement is true about porosity as described?
• Which cleaning steps are recommended before TIG welding stainless steel plate?
• What is the typical representation of a WPS document in welding practice?
• When welding low carbon steel with GTAW, which of the following describes the proper electrode shape and polarity together?
• Why should carbon steel tools be avoided when preparing stainless steel surfaces for TIG welding?
• The porosity described is due to pockets of gas trapped during manufacturing. Which gas is this primarily?
• Which pair of adjustments is commonly used to fine-tune heat input during TIG plate welding?
• What is the purpose of a gas lens in GTA welding?
• When welding a plate butt joint, edge prep often includes a root gap. What is the typical root gap value?
• What are the experiments in this chapter designed to do?
• What should be done to the end of the filler rod if it becomes oxidized?
• When setting up a GTA weld on low carbon steel, the tungsten should be ______ and the welding machine set for ______.
• Why is preheating sometimes used on thick carbon steel plate welded with TIG?
• Oxides on _____ may prevent the molten weld pool from flowing together.
• With which gas does penetration and bead profile become sensitive to arc length, and the long arcs needed for feeding filler wires are more difficult to control?
• Which statement about welding machine settings is true?
• What polarity should the welding machine be set to for a GTAW on low carbon steel?
• How should the tungsten tip be shaped for DC TIG welding versus AC TIG welding?
• What is the most routinely used weld inspection method for TIG plate welds and what does it primarily assess?
• Tungsten with the highest level of lanthanum oxide is classified as which designation?
• What is the proper method to clean base metal surfaces before TIG welding plate?
• Which parameter is the primary determinant of heat input in a TIG weld?
• Which technique is particularly effective at minimizing distortion by sequentially placing heat along the joint, while still using TIG welding?
• What routine handling practice helps keep filler rods in good condition for TIG welding?
• If a larger diameter filler rod is used, what is the effect on the weld bead geometry?
• Which items constitute the minimum PPE required for TIG welding?
• Which statement about electrode tip shapes in DCEN operation is true?
• What is the primary function of shielding gas in TIG plate welding?
• Which additive to tungsten is non-radioactive and mimics thorium’s effect?
• Which method helps prevent porosity due to moisture in filler metal or shielding gas during TIG welding?
• Adding which element has the same effect on electrode characteristics as thorium, but is not radioactive?
• In TIG welding, which statement accurately describes the effect of using a larger filler rod diameter on bead geometry?
• Why would a welder need to make a list of machine settings?
• _____ is inexpensive and requires the least amount of cleaning.
• What action directly reduces the heat input during a TIG weld when penetration is excessive?
• What practical step is used to adjust heat input when aiming for shallow penetration?
• Which is a method to minimize erosion of the tungsten electrode?
• Which statement best describes a groove weld?
• With _____, surface tension helps hold the metal in place, giving excellent bead contour.
• What is the typical adjustable range for the tungsten point angle in GTA welding?
• To reduce welding costs, which combination of gas flow rates and pre/postflow time is recommended?
• Tungsten contamination in welding results in what?
• Which document records the results of welding procedure performance tests on sample joints?
• How does moisture in filler rods affect TIG weld quality, and how can you mitigate it?
• Which statement about DCEN is true?
• What is the effect on heat input if you double the travel speed while keeping amperage constant?
• To achieve deeper penetration without changing joint fit-up, you would typically
• Which statement is true about grinding tungsten electrodes?
• What happens to heat input when you maintain the same amperage but increase travel speed?
• The _____ possible gas flow rates and the _____ pre flow or postflow time can help reduce the cost of welding.
• Which of the following best represents the minimum PPE required for TIG welding?
• Which best describes porosity in the context of mild steel welding?
• What is the recommended torch angle range from the work to achieve a stable arc and consistent bead in TIG welding on plate?
• Carbide precipitation involves combining carbon with which element?
• To prevent undercut at the TIG weld toe, which practice is recommended?
• Which material is inexpensive and typically requires the least cleaning prior to welding?
• AC concentrates about what fractions of its welding heat on the work and on the tungsten?
• Which parameter primarily controls heat input in TIG welding?
• Under DCEP, how is arc heat distributed between the plate and the electrode?
• Which of the following is the primary purpose of shielding gas in TIG welding?
• The improved electron emission of which tungsten type allows it to carry approximately 20% more current than pure tungsten?
• Which of the following is an inert gas?
• If heat input is too high, what is a straightforward change to reduce it while keeping other controls the same?
• What is the primary function of shielding gas in TIG plate welding, and which gas is most commonly used for steel plates?
• What does gas coverage refer to in TIG welding, and what symptoms indicate poor coverage?
• What is the primary effect of using a gas lens on the shielding gas in GTA welding?
• What is interpass temperature and what is a typical maximum interpass temperature for carbon steel TIG welding?
• Which statement about erosion of the tungsten electrode is true?
• For welding stainless steel, which combination of arc current setting and travel speed is recommended?
• What is the typical shielding gas flow rate range when TIG welding carbon steel plates?
• Which statement about water-cooled GTA welding torches is NOT true?
• In TIG welding, what is the effect of excessive arc length on gas coverage and weld quality?
• In TIG welding, how does plate thickness affect heat input and the number of passes?
• Which combination correctly describes the welding setup and a porosity cause?
• What is the purpose of a gas lens in TIG welding, and how does it affect shielding gas consumption?
• Porosity on mild steel welds is described as tiny bubbles; which gas is primarily responsible for these pockets?