Question

Q17. In a tensile test
, necking starts at
O (A) lower yield stress
O (B) upper yield stress
(C) ultimate tensile stress
O (D) just before fracture​

Answer 1

Answer:

hyy plz MARK as brillent

Explanation:

Necking starts when the plot of nominal stress against nominal strain reaches a maximum (plateau) – see Fig.3. This is not always easy to identify in terms of the strain at which it occurs, since it is commonly a rather flat plateau, but the stress level is usually fairly well defined.