4A Unit 6 Questions and Answers Graded A+

4A Unit 6 Questions and Answers Graded A+ (4-047-1.11) Electric arc temperatures may be as high as: Select one: a. 4250°C b. 5325°C c. 7450°C d. 8300°C d. 8300°C The two types of Penetrant Testing (PT) are fluorescent testing and: Select one: a. Developer testing b. Colour Contrast testing c. Infrared testing d. Viscous Penetrant testing b. Colour Contrast testing What are the main component metals of "white metal"? Select one: a. bronze and tin b. aluminum and lead c. lead and tin d. copper and iron c. lead and tin (4-047-1.2) During submerged arc welding, _________ prevents the weld from oxidizing and cooling too fast. Select one: a. Amperage b. Flux c. Rod composition d. Rod rate of feed b. Flux (4-046-2.6) In the process of making iron, limestone is added to: Select one: a. Make the pig iron more malleable b. The blast furnace in order to form slag c. The iron ore in the moulds d. Pig iron moulds b. The blast furnace in order to form slag What is "toughness"? Select one: a. the ability of a metal to resist stress b. the ability of a metal to resist indentation c. the ability of a metal to resist breakage under sudden impact d. the ability of a metal to resist elongation c. the ability of a metal to resist breakage under sudden impact An example of non-fusion welding process: