4th Class Power Engineering Unit A6 Chapter 1: Energy Plant Construction and Operation Materials 100% Verified

4th Class Power Engineering Unit A6 Chapter 1: Energy Plant Construction and Operation Materials 100% Verified Materials, which will break rather than bend when subjected to an outside force are said to be: Select one: a. tough b. malleable c. hard d. brittle d Brass is an alloy of: Select one: a. copper and bronze b. copper and lead c. brass and lead d. copper and zinc d In order to avoid residual stresses after welding, alloy steels: Select one: a. cannot contain any carbon b. should be heated before, during, and after welding c. are not affected by carbon content d. must be heated after welding b A material that can be drawn out or extended in length without breakage is said to be: Select one: a. hard b. brittle c. ductile d. chilled c Malleability of a metal: Select one: a. will usually decrease as the temperature rises b. is checked using the Charpy tester c. means it will crack when struck with a hammer d. usually increases with the addition of heat d An element, which reduces creep in metal, is: Select one: a. nickel b. copper c. vanadium d. molybdenum d Resistance to indentation refers to a metals property which is: Select one: a. brittleness b. hardness c. malleability d. toughness b Nickel when added to steel: Select one: a. improves toughness and corrosion resistance b. decreases toughness and corrosion resistance c. improves malleability d. decreases hardness and brittleness