Answer Happy

Question 3 Which of the following types of tensile failures in the figures is more ductile? (a) (b) O Both have the same ductility O a Ob O Can not be determined Question 4 All engineering work is based on engineering stress and strain, which is justifiable for: (Select all that applies) The fracture strength is larger in engineering stress-strain curves than true stress strain curves for the same material The engineering stress is calculated for all stress levels from the final cross sectional area Design using ductile materials is limited to the elastic region where engineering and true values differ little The reduction area of most parts at their service stresses i not known; only the original area is known. 0.5 pts 0.5 pts