NOCTI WELDING EXAM QUESTIONS AND ANSWERS

wood is correct because a Class A fire extinguisher is appropriate for use only on regular combustible materials such as wood, paper, cloth, etc. - Answer-A Class A fire extinguisher can be safely used on a/an _____ fire. When welding in a confined space, the welder must have - Answer-a watchperson outside the space is correct because OSHA requires that a watchperson be outside the space and in constant contact with the person in the confined space in order to ensure the person's safety and call for emergency assistance if needed. On an OFC set up, the hose with the right-handed thread fittings connects to which gas? - Answer-oxygen is correct because on an OFC set up, the hose with the right-handed thread fittings connects to oxygen. Which of the following is a ferrous metal? - Answer-mild steel is correct because mild steel is a ferrous metal. Welding with intermittent welds on both sides of a tee joint will result in - Answer-controlling distortion over the entire joint is correct because using intermittent welds on both sides reduces overall heat in-put, thereby lessening residual stresses caused by weld shrinkage. The ability of a metal to withstand shock loading is known as its - Answer-toughness is correct because the ability of a metal to withstand shock loading is known as its toughness. Ductility is a term used to describe what mechanical property in metals? - Answer-ability to be stretched and formed is correct because ductile metals are easily stretched and formed. Which of the following welds aligns two metal pieces approximately in the same plane? - Answer-butt joint is correct because a butt joint consists of placing two pieces of metal up against one another to weld along the seam between them in the same plane. What type of weld discontinuity is indicated by the arrow in the figure below? - Answer-transverse crack is correct because transverse cracks are surface cracks that occur in the weld metal perpendicular to the welding direction. The _____ weld test is classified as a destructive test. - Answer-guided bend is correct because a guided bend test is performed when a weld is cut into two welded specimens that are prepared for a face bend and a root bend. This test destroys the weld in the testi