Q. The maximum reduction in cross-sectional area per pass ( R ) of a cold wire drawing process is
R = 1 – e-(n+1) ,
where n represents the strain hardening coefficient. For the case of a perfectly plastic material, R is
(A) 0.865 (B) 0.826 (C) 0.777 (D) 0.632
Ans: 0.632
![Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Determine-the-correctness-or-otherwise-of-the-following-Assertion-A-and-the-Reason-R.jpg)
