202218b (a) Plot engineering stress strain diagram for the ductile material. Show the points such as proportionality limit, elastic point, tensile limit and fracture point in the stress strain diagram. 23/09/29 the (b) A steel wire of radius 1.5 mm and length 3 m is hanged with a downward force of 1 KN. (1) Calculate the extension in wire due to force applied. (ii) What should be the minimum radius of wire so that wire should not go in plastic 3x 108 N/m, Youngs modulus (E) for steel wire is 200GPa. [3] [2] 02-849 su with 121 02 points he2023 vield point, Pastic de deformation. Elastic limit strength for steel wire is 2.4 ultimate