MIG Welding Exam Questions with Correct Answers Graded A+

MIG Welding Exam Questions with Correct Answers Graded A+ Incomplete fusion - Answers a weld discontinuity in which fusion did not occur between weld metal and fusion faces or adjoining weld beads Duty Cycle - Answers The percentage of time during an arbitrary test period that a power source or its accessories can be operated at rated output without overheating arc voltage - Answers the voltage across the welding arc Root reinforcement - Answers weld reinforcement opposite the side from which welding was done Filler metal - Answers The metal or alloy to bearded in making a brazed, soldered, or welded joint undercut - Answers a groove melted into the base metal adjacent to the weld toe or weld root and left unfilled by weld metal crater - Answers a depression in the weld face at the termination of a weld bead lap joint - Answers a joint between 2 overlapping members in parallel planes complete fusion - Answers fusion over the entire fusion faces and between all adjoining weld beads tack weld - Answers a weld made to hold the parts of a weldment in proper alignment until the final welds are made gas nozzle - Answers a device at the end of the torch or gun that directs shielding gas Root opening - Answers a separation at the joint root between the work pieces Reinforcement - Answers weld reinforcement on the side of the joint from which welding was done contact tube - Answers a device which transfers current to a continuous electrode spatter - Answers the metal particles expelled during fusion welding that do not form a part of the weld deposited metal - Answers filler metal that has been added during a welding operation porosity - Answers cavity type discontinuities formed by gas entrapment during solidification base metal - Answers the metal or alloy that is to be weld, brazed, soldered or cut gas regulator - Answers a device for controlling the device of gas at some substantially constant pressure direct current electrode positive (DCEP) - Answers The arrangement of direct current arc welding leads in which the electrode is the positive pole and the work piece is the negative pole of the welding arc inert gas - Answers the gas the normally does not combine chemically with materials Drag - Answers the travel angle when the electrode is pointing away from the direction of travel Fillet weld leg - Answers The distance from the joint root to the tow of the fillet weld 2F - Answers A horizontal position T-Joint is classified as this 3G - Answers A vertical position groove weld is classified as this 4F - Answers an overhead position T-Joint is classified as this True - Answers 1G pipe welding required the pipe to be turned or rolled while welding. true or false 5G - Answers The position of a bell hole is 6G - Answers the position of an arkansas bell hole is 5 - Answers the total amount of basic type of joints is Direct current - Answers the current that most gas metal arc welding sources are 3 methods of application of gas metal arc welding are? - Answers semi-automatic, mechanical, and automatic The most commonly used shielding gases used for gas metal arc welding are - Answers carbon dioxide, mixture of argon and CO2, and a mixture of argon and oxygen contact tube - Answers electrode extension is the length of unmelted electrode extending beyond the decrease - Answers lengthening electrode extension will _____ the amperage ER70S-X E - Answers electrode Stand for ER70S-X R - Answers Filler metal Rod stand for ER70S-X 70 - Answers minimum tensile strenght (70,000) psi stand for ER70S-X S - Answers Solid stand for The length of unmelted electrode beyond the contact tube - Answers electrode extension