Welding Theory Final Exam 2025

Which of the following is the definition of "policy" - Correct Ans-Plan Arc radiation can cause what on skin? - Correct Ans-Burns Which of the following decible measurements can cause heating damage? - Correct Ans-95 Johnny is welding in a confined space. Which of the following gases is likely to be consumed and could cause Jonny to suffocate if it is completely depleted? - Correct Ans-Oxygen Sophia is designing a new welding shop for the local high school. Where should the compressed gas and fuel cylinders be stored? - Correct Ans-In a location designated for cylinders. Which of the following should not be used on a cylinder at any time ? - Correct Ans Petroleum based lubricant Which of the following is not an example of hazardous material? - Correct Ans-Carbon steel Emily is looking for controls on a piece of equipment. Which color is she looking for? - Correct Ans-Yellow What is the color blue used to designate? - Correct Ans-Out of working order equipment To improve visibility and highlight the edges of equipment, which color is used? - Correct Ans-Ivory Gretchen is looking for a cord with three prongs in the welding shop. which of the following is the voltage of the power cord? - Correct Ans-110 Electrical equipment should always be properly connected to an electrically neutral source. what is the source called? - Correct Ans-Grounded Which of the following is not part of the fire triangle - Correct Ans-Sand Ian must use a flammable gas in his cutting operation. which of the following would be a suitable choice? - Correct Ans-Acetylene Jamie must use a non-flammable gas for his welding operation. which of the following would be a suitable choice? - Correct Ans-Argon NCCER NCCER How many classes of fires are there - Correct Ans-4 In what year was the occupation safety and health act passed - Correct Ans-1970 EPA is the abbreviation for which of the following federal organizations responsible for protecting human health and the environment? - Correct Ans-Environmental protection agency How many different types of ventilation are commonly used in the welding shop? - Correct Ans-3 Kevin is working with a metal which contains a hazardous material. which of the following substances in considered a hazardous material? - Correct Ans-Cadmium How long is a duty cycle? - Correct Ans-10 minutes Small transformer type machines can have how low of a duty cycle? - Correct Ans-20 percent Approximately how efficient are stick electrodes? - Correct Ans-60 percent Which size electrode is not one of the most commonly used? - Correct Ans-1/4in. Which electrode is a deep penetrating electrode? - Correct Ans-6010 If you are using a piece of 1/8 inch thick base metal, what size electrode should you use? - Correct Ans-1/8in. Which of the following is a basic type of weld? - Correct Ans-Groove Which type of joint is the groove weld use on? - Correct Ans-Butt joint Which type of weld is generally used for thin metals? - Correct Ans-Spot A plug or slot weld is what type of weld, just prepared differently? - Correct Ans-Fillet What does the acronym IPM stand for? - Correct Ans-Inches per minute Which of the following terms means to work together? - Correct Ans-Synergic Which is the mixture composition of a 75/25 shield gas used in gas metal arc welding? - Correct Ans-75% argon and 25% CO2 What is GMAW wire fed from? - Correct Ans-A spool NCCER NCCER In the American welding Society electrode classification ER 70S-6, what does the 70 stand for? - Correct Ans-70,000 pounds per square square inch of tensile strength GMAW wire does not travel through which of the following? - Correct Ans-Trigger remote The distance from the end of the electrode to the contact tip is referred to as which of the following? - Correct Ans-Stick out What does the MP in the Lincoln PowerMIG 350MP model stand for? - Correct Ans Multiple process The contact tip is typically recessed about how much inside the nozzle? - Correct Ans 1/8in. What directs the shielding gas onto the base metal? - Correct Ans-Nozzle What is the purpose of welding inspection? - Correct Ans-To evaluate the quality of the welds How many welder qualification tests qualify a welder to do all welds, in all positions on all base metals, with every welding process? - Correct Ans-0 Which of the following is not one of the structural or groove joints discussed? - Correct Ans-Square groove butt joint on pipe Amy is welding a fillet weld in class. Which of the following is a possible weld position she could use? - Correct Ans-1F Why are codes, standards and specifications for manufactured and fabricated products developed? - Correct Ans-To maintain and assure the quality of products Ben is looking up welding codes and standards for a class project. Which national organization is one whose standards are not commonly used in the welding industry? - Correct Ans-American society of materials engineers Connor has found a small crack in his recently completed weld. This is an example of which of the following? - Correct Ans-A discontinuity Which of the following is not usually associated with undercut? - Correct Ans-The voltage or amperage is set too low Which type of testing destroys the weld or material being tested? - Correct Ans Destructive testing NCCER NCCER Donna must perform a distractive test on one of her welds from her welding class. Which test method could she use on the weld? - Correct Ans-Tensile testing Soundness tests include all of the following except - Correct Ans-Hardness test The nick-brake test is commonly required by which of the following codes? - Correct Ans-API 1104 Eddy must perform a nondestructive test on one of the welds from his welding class. Which test method could not be used on the weld? - Correct Ans-Macro etching test Which of the following is denser than a flaw in a weld? - Correct Ans-The weld metal Which testing method uses soundwaves to locate discontinuities in the weld or base metal? - Correct Ans-Ultrasonic At what angle is a plate cut for a 2G SMAW welding certification test? - Correct Ans 22.5 degrees Notches on the edge of a bevel can be caused by which of the following? - Correct Ans Machine set too fast Which of the following bend tests will be performed on the coupons? - Correct Ans-Face and root Which of the following is one of the most commonly used tests to qualify welders? - Correct Ans-Guided bend test Which is the maximum length for any opening on the surface of a 2G SMAW guided bend test specimen? - Correct Ans-1/8inch What technique does the welder used to produce the stinger pass in the 1F weld? - Correct Ans-Backhand According to the welder, what is a possible problem with running too much heat in the 2F T-joint? - Correct Ans-Failure in backfilling the crater What is the ideal shape of the weld as explained in the 2F weld process? - Correct Ans Slightly convex If the 3F T-joint Vertical down process the welder steps out of the weld pool. This technique is similar in what other process? - Correct Ans-SMAW using a 6010 electrode Which of the following can produce undercut if not done correctly? - Correct Ans-Angle on the joint NCCER Which of the following is not a discontinuity? - Correct Ans-Divot If the weld is laying into a joint with a concave weld contour with under cutting issues, what might be the case? - Correct Ans-Voltage of the machine set too high In what case is the overhead position in welding nescessary? - Correct Ans-The weld joint position dictates it In which of the following is not a part for welding gun? - Correct Ans-Collet What is the main difference between MIG wire and flux cord wire? - Correct Ans-Flux cored wire is filled What is another term for a direct current electrode positive? - Correct Ans-Reverse polarity Would you the following features are not used on the welding machine? - Correct Ans High frequency In the 3G V-groove multiple pass process, what is the correct term for the final pass? - Correct Ans-Cover pass Which of the following factors determines the darkness of the welding shade? - Correct Ans-Welding current Flux cored arc welding is similar to