1 Exam Prep Prov Module: : Welding Questions and Answers

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1 1 Exam Prep Prov Module: : Welding Questions and Answers 1. Oxyfuel cutting can be performed on. A. Stainless steel B. Aluminum C. Ferrous metals D. Nonferrous metals 2. Polyester and other synthetic fabrics should not be worn when cutting because. A. They break down when exposed to ultraviolet light B. Sparks will cause them to melt, inflicting burns to the skin C. They will burst into flames in the presence of pure oxygen D. They will give off toxic fumes if exposed to acetylene 3. When cut with a torch, gives off toxic fumes. A. Galvanized steel B. Ferrous metal C. Oxidized steel D. Carbon steel 4. Proper ventilation is important when welding because. A. It keeps the operator from getting overheated B. It keeps the smoke away from the workpiece C. The fumes and smoke given off by the process can be dangerous D. The airflow keeps sparks away from the operator 5. The purpose of grounding welding equipment is to. A. Prevent equipment from being turned on accidentally B. Protect workers from electrical shock C. Protect equipment from theft D. Decrease the heat affected zone around the weld 1 Exam Prep Prov Module : Welding 1

2 6. Which of the gases listed below burns at the highest temperature when combined with oxygen? A. Propylene B. Mapp C. Natural gas D. Propane 7. Which of the following is a characteristic of MAPP gas? A. It is odorless. B. It burns at a much lower temperature than acetylene. C. It much less stable than propane. D. It can be used at pressures over 15 psi. 8. The condition in which a flame goes out and burns back inside the torch is known as a. A. Flashback B. Backfire C. Backlash D. Vapor lock 9. The pressure regulator on a fuel tank. A. Prevents gas from backing up into the tank B. Relieves excess internal pressure to keep the tank from exploding C. Reduces the high pressure in the cylinder to the lower working pressures required for cutting or welding D. Allows the operator to increase the working pressure in order to work faster 10. The characteristic of fuel gas fittings that differentiate them from other types of fittings is fuel gas fittings. A. Have right-hand threads B. Have left-hand threads C. Require lubricant for a proper seal D. Require teflon tape for a proper seal 11. The main difference between a single-stage regulator and a two-stage regulator is that the two-stage regulator. A. Can have two fuel tanks connected to it B allows both the oxygen and fuel to be controlled from the same regulator C. Does not have to be adjusted to compensate for reduction in the tank content D. Has two pressure adjusting screws 1 Exam Prep Prov Module : Welding 2

3 12. The standard color coding scheme for hoses is for oxygen and red or for fuel gas. A. Blue; red B. Green; black C. Red; white D. Black; white 13. This cutting tip shown in Figure 1 is used for. A. Gouging metal B. Cutting sheet metal C. Cutting rivets D. Metal washing 14. The oxyfuel flame that has a white feather created by excess fuel is called a(n) flame. A. Neutral B. Carburizing C. Oxidizing D. Over-oxidizing 15. The oxyfuel cutting process used to cut out bolts or rivets is known as. A. De-bolting B. Gouging C. Piercing D. Washing 16. A welding machine that produces only AC welding current is known as a(n) machine. A. Transformer-rectifier B. Transformer C. Motor-generator D. Inverter 1 Exam Prep Prov Module : Welding 3

4 17. If a welding cable is very long, it. A. Will need to have a larger diameter to reduce voltage drop B. Will dissipate more of the heat from the welder C. Will need to have a small diameter to maintain the needed resistance D. Must not be coiled during welding 18. The rating of a workpiece clamp is based on. A. The pressure it exerts on the workpiece B. The current it is capable of carrying without overheating C. The type of metal used in its construction D. Its melting point 19. In the electrode designation E12018, the fourth digit represents the. A. Tensile strength B. Welding position C. Flux type D. Type of welding machine to be used 20. In the electrode designation E8018-C3, the C in the suffix stands for. A. Carbon-molybdenum alloy steel B. Chromium-molybdenum alloy steel C. Manganese-molybdenum alloy steel D. Nickel-steel alloy 21. If a job required overhead welding of a plated surface, which of the following electrodes would be the correct choice? A. Fast-fill B. Fast-freeze C. Fill-freeze D. Low-hydrogen 22. Which of the following types of electrodes must be stored in a heated oven? A. Fast-fill B. Fast-freeze C. Fill-freeze D. Low-hydrogen 1 Exam Prep Prov Module : Welding 4

5 23. To minimize joint preparation, use a penetration electrode for the root pass. A. Shallow B. Medium C. Shallow or medium D. Deep 24. A weld bead made with little or no side-to-side motion of the electrode is called a(n). A. Continuous flow bead B. Weave bead C. Automated bead D. Stringer bead 25. The welding process that uses a consumable wire is. A. GTAW B. SMAW C. GMAW D. C-ACA 1 Exam Prep Prov Module : Welding 5

6 Answer Key 1. C B A C B B Table 1 7. D A C B C B B Figure B D B A B B D B D D D C Exam Prep Prov Module : Welding 6