The Following Are Measures of Feasibility for Several Proposed Cup-Drawing

Multiple Choice

The following are measures of feasibility for several proposed cup-drawing operations.Which of the operations are likely to be feasible (three best answers) :

A) DR = 1.7
B) DR = 2.7
C) r = 0.35
D) r = 0.65
E) t/D_b = 0.5%
F) t/D_b = 2% where DR = drawing ratio r = reduction t = stock thickness and D_b = blank diameter