Home / MCQ Bank / Metallurgical Engineering

Metallurgical Engineering Introduction To Metallurgy Difficulty: Medium

Under application of stress, when a straight dislocation (radius of curvature, r = ∞) tries to bow out around precipitates of spacing L, there is an instability during changing of curvature at Which of the following refractory materials is not used in the BOF (LD) working lining? Zinc oxide is reduced at a constant temperature in a closed reactor using ZnO(s) and C(s) as the only starting materials. The following reactions are assumed to be at thermodynamic equilibrium: ZnO(s) + C(s) = Zn(g) + CO(g) 2CO(g) = CO 2 (g) + C(s) Assume ideal gas behaviour. Based on mole balance, the relationship applicable to the system at equilibrium is The motion of edge dislocation inside the materials may be For most extrusion operations, the optimum semi die angle is between