46. What is the term used to describe the process of shaping steel by pouring molten metal into a mold and allowing it to solidify?
a) Forging
b) Casting
c) Extrusion
d) Rolling
47. Which of the following is NOT a common application of steel in the electrical industry?
a) Power transmission towers
b) Electrical wiring
c) Electrical appliances
d) Electric motors
48. What is the term used to describe the process of transforming iron into steel by blowing air through molten iron in a converter?
a) Smelting
b) Refining
c) Alloying
d) Galvanizing
49. Which of the following is a common method of steel forming that involves forcing molten steel through a shaped die?
a) Hot rolling
b) Cold rolling
c) Pressing
d) Extrusion
50. Which of the following is NOT a common method of steel surface preparation before welding?
a) Grinding
b) Cleaning with solvents
c) Acid etching
d) Flame cutting
