question_answer

In drawing operation if \[{{D}_{i}}=\] initial diameter and \[{{D}_{0}}=\] outgoing diameter, then what is the degree of drawing equal to?

A) \[\frac{{{D}_{i}}-{{D}_{0}}}{{{D}_{i}}}\]                  

B) \[\frac{D_{i}^{2}-D_{0}^{2}}{D_{i}^{2}}\]

C) \[\frac{D_{i}^{2}-D_{0}^{2}}{D_{i}^{2}}\]              

D) \[\sqrt{\frac{D_{i}^{2}-D_{0}^{2}}{D_{i}^{2}}}\]