 
			 
			MCQOPTIONS
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				| 1. | The equivalent strain ε for plastic deformation is defined as ____________ (where E=equivalent strain, r=reduction ratio). | 
| A. | E=ln(r) | 
| B. | E=ln(1-r) | 
| C. | E=ln(1/(1-r)) | 
| D. | E=ln(1/r) | 
| Answer» D. E=ln(1/r) | |