LA City Certified Welder Written Practice Test

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• Which statement best describes a fillet weld and its typical applications?
• Spatter is most directly caused by what?
• SMAW stands for Shielded Metal Arc Welding; a common electrode used for general structural carbon steel welding is E7018.
• Arc wandering in welding is primarily caused by what, and what measures help mitigate it?
• Which method helps control distortion in welded assemblies?
• In repairs, what approach should be taken regarding heat input and inspection?
• Which welding technique helps minimize heat input by dividing heat across multiple passes?
• During a visual inspection, which sign indicates the weld may be misaligned?
• Which of the following statements is true about E6010 electrodes?
• Which elements are typically included in a welder's safety plan in the shop?
• Which of the following is the symbol for a standard I beam?
• A WPS is intended to provide consistent welding variables for a specific application to ensure repeatability by which group?
• ASTM A36 is a common specification for what?
• What hazards apply when welding in confined spaces, and how can hazards be mitigated?
• Which statement best describes why moisture-sensitive electrodes require proper storage?
• How should welding fumes and gases be controlled in the shop?
• Which welding process uses a non-consumable tungsten electrode?
• Which combination primarily controls heat input and penetration in welding?
• What is magnetic particle testing (MT) used for in welding inspection?
• What is the purpose of a pre-weld check of the workpiece and environment?
• Which non-destructive testing method is commonly used to detect surface-breaking defects by applying a liquid penetrant?
• What information is typically marked on filler metal spool or electrode packaging to indicate its composition and usage?
• How does surface cleanliness impact weld quality?
• Which polarity does E6010 require for welding?
• How is weld heat input calculated (basic formula)?
• Fillet welds are measured by which dimension?
• What is the purpose of interpass cleaning and why is slag removal important in multi-pass welding?
• According to a welding symbol, the included angle of a vee-groove joint is to be 45 degrees. How should the plates be prepared?
• Which statement best describes a primary difference between GMAW (MIG) and GTAW (TIG) welding?
• In AWS D1.1 2010, minimum preheat and interpass temperatures are found in which clause?
• What is the primary purpose of the welder's PPE, and which items are essential when performing arc welding?
• What is slag in welding and what is its role?
• What is the effect of proper joint fit before welding?
• If a vee-groove joint has a 45-degree included angle, what is the bevel angle on each plate?
• How are fillet welds on both sides indicated on a welding symbol?
• What should be included in a daily welding safety checklist?
• In a groove weld, what is root opening and what is throat?
• What is the primary purpose of wearing a welding helmet and flame-resistant clothing during welding?
• What is the heat-affected zone (HAZ) and why is its size controlled?
• Which transfer mode is typically associated with the highest deposition rate and smooth bead with minimal spatter?
• Which statement best describes porosity causes and prevention?
• What is the purpose of an E6013 electrode and typical usage?
• Which process corresponds to FCAW-S?
• Why is fit-up and alignment important in pre-welding steps?
• What dimension is used to determine the size of a fillet weld?
• Which statement best describes MT and PT testing in welding inspection?
• With DC straight polarity, the electrode is:
• Inadequate joint fit-up commonly leads to which defect?
• Which combination correctly describes E6010?
• Which parameter influences bead shape and stability?
• Which are typical causes of poor weld appearance and how can you improve it?
• Open-Circuit voltage occurs:
• Fillet welds are commonly used on which types of joints?
• How must cracks be repaired?
• FCAW-S stands for which welding process?
• Why is proper storage of electrodes and welding wire important?
• Which organization standardized specifications and testing methods for metals?
• Which electrode is associated with DC reverse polarity and deep penetration?
• What is dye penetrant testing (PT) used for in welding inspection?
• Which temperature condition would disallow welding with E6010?
• Which action is specified for repairing cracks in welds?
• Which clause in AWS D1.1 2010 is titled 'Fabrication'?
• Why is proper joint fit-up and alignment critical before welding?
• Welder qualification pass criteria typically include which elements?
• Which practice helps prevent weld cracking, corrosion, and fatigue during fabrication?
• Name the four basic weld joint types.
• What is porosity in a weld and two common causes?
• Iron powder in electrode coatings
• What is hydrogen-induced cracking and which steels are most at risk?
• When the base metal temperature is below 32°F, what is the minimum preheat temperature that must be applied before welding?
• For the weld test to be valid it must be taken at which facility?
• What is weld reinforcement and why is excessive reinforcement discouraged?
• During a visual weld inspection, which criteria indicate the weld is acceptable?
• Which electrode is in group F3?
• During visual inspection, which item is checked as part of acceptance criteria?
• Which statement best describes the impact of contaminants on welds?
• What is not a basic weld joint?
• What is AWS electrode classification and what does the designation E7018 indicate?
• Which statement about the E7018 designation is correct?
• Open-circuit voltage (OCV) is defined as what, and why is it important in welding safety?
• Penetration with an E6013 electrode could be best described as
• Which of the following is true about the E70T-X designation?
• What is a welding machine duty cycle?
• What shielding gas is typically used for aluminum GMAW welding?
• What are common visual weld defects and how can they be identified?
• Which factors most directly influence the strength of a fillet weld that is applied on both sides of a joint?
• Arc wandering can be mitigated by which of the following practices?
• What does the fourth digit (8) in the electrode designation indicate?
• What is the innershield process?
• Which condition would necessitate pre-weld cleaning?
• What does FCAW stand for and what is a key advantage?
• Which practices help minimize distortion when fabricating a weld joint for a frame?
• Which condition most directly increases the risk of hydrogen cracking in a weld?
• Which welding process is typically best suited for outdoor production welding due to wind tolerance and high deposition rates?
• What is the purpose of shielding gas in welding?
• What causes arc blow and how can it be prevented?
• Which statement about open-circuit voltage is accurate?
• What is the manual welding process as defined by the Los Angeles City Building Code?
• Which welding process is known for high deposition rates suitable for thick sections?
• What is Lockout/Tagout and why is it required for welding equipment maintenance?
• Which shielded arc welding process is identified by the acronym SMAW?
• How do joint fit-up, alignment, and gap influence weld integrity?
• Which electrode is commonly selected for root passes on structural carbon steel in SMAW to promote deep penetration?
• Which defect is characterized by gas pockets trapped in the weld metal?
• What type of welding machine is required when using ER705-2 (mig/tig)?
• What is the role of a Welding Code such as AWS D1.1 in LA City welder certification?
• What is interpass temperature?
• Which statement about slag covering is true?
• High open-circuit voltage can pose what hazard in welding safety?
• What is pre-weld cleaning and why is it important?
• Fillet welds are particularly suited for which joint configurations?
• The acronym SMAW stands for which welding process?
• When is hardness testing indicated in welding practice?
• What is the thinnest base metal that can be welded by an LA city certified structural steel welder?
• What do the last two digits in E7018 indicate?
• What is the purpose of nondestructive testing in welding inspections?
• In the E71T-X designation, the "71" indicates tensile strength of approximately how many ksi?
• What type of current should or could be used with an E7016 electrode?
• Why is metal cleanliness and surface prep important before welding?
• Which electrode classification is commonly used for structural carbon steel welding in SMAW?
• Welding cannot take place when the ambient temperature is below what value?
• Post-weld heat treatment (PWHT) is typically required to accomplish what?
• What is weld bead profile and how is it judged in a visual inspection?
• What does a Welding Procedure Specification (WPS) provide?
• ER705-2 electrode is associated with which welding processes?
• What is the purpose of a root pass in a groove weld?
• After removal from the original container or hot box, how much time does the welder have to use E7018 electrodes
• Which defects can be identified by their appearance, and what are some examples?
• An E6011 electrode may be used with which current polarity?
• How long after removal from the rod oven does the welder have to use E8018 electrodes?
• Which statement describes a valid use for electrodes ending in 4 with respect to polarity?
• Which polarity is specified for E6010 welding?
• Interpass temperature is the temperature maintained between weld passes to control hydrogen diffusion, microstructure, and residual stresses; excessive temperatures can cause cracking. Which statement best describes interpass temperature?
• Which organization provides the authoritative source of welding safety information?
• Why is ventilation important in welding?
• What is the purpose of the slag covering on a completed weldment?
• Which description best fits the E7028 electrode usage?
• What is WPS?
• What is the purpose of a Weld Procedure Specification (WPS) and a Welder Performance Qualification (WPQ)?
• Which of the following best describes the welding characteristics of E6010 electrodes?
• Direct Current Straight Polarity (DCSP) is a polarity option used in welding. Which statement best describes DCSP?
• At an ambient temperature of -1 degree, can you weld with E6010?
• Which polarity is used to help prevent arc blow during welding?
• In direct current straight polarity (DCSP) welding, the electrode polarity is connected to which terminal?
• The last digit in oscillating-type electrodes can indicate which of the following values?
• What are common reasons for welds failing during service and how could these be prevented in the fabrication stage?
• What is the purpose of a welding fire watch, and when is one typically required?
• Which electrode is commonly used for root passes on structural carbon steel in SMAW?
• Hydrogen-induced cracking risk is mitigated by using which electrodes?
• Which welding process typically uses a non-consumable electrode and may require a separate filler metal?
• Which shielding gases are commonly used for GMAW and how do they affect welds?
• Which of the following is NOT a common visual weld defect?
• How can distortion or warping be controlled in welded assemblies?
• Clause 7 of the AWS D1.1 Structural Welding Code Steel is concerned with
• What is the last digit in oscillating-type electrodes?
• What is preheat and why is it used before welding certain steels?
• The described joint configurations are used to achieve which weld completion?
• Under which circumstances is shielded metal arc welding (SMAW) preferred over GMAW or GTAW?
• Which statement about shielding gas mixtures for GMAW is accurate?
• What polarity is used with FCAW
• What does the '70' in E70T-X indicate?
• What is the proper method to remove slag after welding with SMAW or FCAW?
• Distinguish between self-shielded and gas-shielded FCAW and when each is used.
• How do you select the proper shielding gas for MIG welding of stainless steel?
• E6010 electrode belongs to which group?
• Which statement best distinguishes penetration from fusion in welding?
• Undercut is commonly caused by which condition during welding?
• Which of the following best describes the polarity requirement of E6010 welding?
• What causes welding spatter and how can it be reduced?
• Which of the following is true about E6010's polarity and penetration characteristics?
• If the bevel on the steel plate is not prepared properly, what defect is most likely to occur in the weld zone?
• Porosity in welds is primarily caused by what?
• Which PPE item is essential for hearing protection during welding operations?
• Describe the difference between radiographic testing and ultrasonic testing.
• To prevent arc blow, what can be used?
• An E7025 electrode may be operated in which positions?
• Which instrument is commonly used to measure root opening at the root of a butt or groove weld?
• Which document defines the approved welding conditions used in production?
• What type of penetration is associated with E6010 electrodes?
• What are common metal transfer modes in GMAW and how do they influence weld quality?
• What is the general purpose of welding symbols on drawings?
• What is a typical proper weld bead profile for a welded joint?
• To avoid galvanic corrosion when welding stainless steel, how should filler metal be chosen?
• What is the purpose of a contour bevel on groove welds and how does it impact penetration and filler metal usage?
• When welding with DCEP, the work piece would be:
• Which AWS publication code is associated with welding symbols in standards?
• Which condition prohibits welding due to surface condition?
• Which elements are part of a basic fillet weld symbol on a drawing, and what does it indicate?
• In a groove weld, which term describes the minimum distance between the weld face and the root?
• On drawings, a groove weld symbol indicates what feature of the joint?
• In pre-weld checks, why is fit-up critical?
• What is the manual welding process, as defined by LA city building code?
• According to AWS D1.1, which welding process is prequalified?
• Electrodes ending in 4 will work with what polarity?
• One effective method to prevent hydrogen cracking in steels during welding?
• E6010 electrodes require which polarity for welding operation?
• What is the function of a back purge in welding stainless steel and when is it necessary?
• What is the purpose of proper grounding in welding?
• Which positions are the E7025 electrode allowed to be used in?
• What steps should you take if you experience an electrical shock while welding?
• Which statement best describes E6010 polarity and penetration?
• Which statement correctly describes a common weld discontinuity and its cause?
• What are common visual acceptance criteria for a welded joint?
• What is root opening and how is it measured?
• Before welding the joint surface shall be free of which contaminants?
• What is the effect of using an argon-based shielding gas with small percentages of CO2 or O2 for MIG welding of stainless steel?
• Why is welder qualification important?
• How do welding parameters influence spatter and post-weld cleanup?
• Which is a pre-welding step for carbon steel plate?
• What is E7018 and what is its key feature?
• Which joint configuration is described as a single bevel groove with a 45-degree groove angle with metal backing to achieve complete joint penetration?
• Which statement correctly describes the E7018 electrode in terms of current and polarity?
• Which statement about GTAW (TIG) welding is true?
• Which welding process commonly uses a consumable electrode?
• How do you differentiate a groove weld symbol from a fillet weld symbol on a drawing?
• Which AWS publication contains requirements for welding symbols?
• Why is AC current used for TIG welding aluminum?
• Which welding process uses a consumable electrode that is continuously fed and typically uses shielding gas for protection in many applications?
• In the AWS SMAW electrode classification, which digit indicates the electrode position?
• What filler metal is commonly used for welding 6061 aluminum in TIG?
• What is the purpose of a Welding Procedure Specification (WPS)?
• Which of the following statements is true about E6010 electrode penetration characteristics?
• Which joint configuration describes a double vee groove with one side backgouged to sound metal after the other side was welded?
• Which non-destructive testing methods are commonly used for welder qualification and in-situ inspection?
• Which of the following is a visual defect that indicates a weld does not fuse properly with the base metal?
• What is hardness testing in welds, and when is it typically performed?
• What does the "71" in E71T-X indicate?
• Which bead profile is considered a proper weld bead?
• In a groove weld, what is the primary purpose of the root pass?
• What is a typical bevel angle for preparing a groove weld on carbon steel plates?
• What is a fillet weld, and how are its leg length and throat defined?
• Which process can be performed with self-shielded FCAW, eliminating the need for external shielding gas?
• Which basic weld joint type is formed when two pieces meet at a right angle and are welded along the outer edge?
• What is the purpose of preheating before welding certain carbon and alloy steels?
• What sequence is typical in a welder qualification test?
• What is the typical total included angle for a groove weld intended for full penetration on carbon steel plates?
• How does shielding gas flow rate affect weld quality in GMAW?
• What is a common specification for carbon steel plate and structural shapes?
• Which clause number in AWS D1.1 2010 is titled 'Fabrication'?
• E7018 shall be used with which welding current and polarity?