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1. |
Principal stresses at a point are 80 N/mm2 and 40 N/mm2, both tensile. The yield stress in simple tension for this material is 200 N/mm2. The values of factors of safety according to maximum principal stress theory and maximum shear stress theory, respectively, are |
A. | 2.5 and 2.5 |
B. | 2.5 and 5 |
C. | 5 and 5 |
D. | 5 and 1.67 |
Answer» C. 5 and 5 | |