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1. |
A punch is used for making holes in steel plates with thickness 8 mm. If the punch diameter is 20 mm and force required for creating a hole is 110 kN, the average shear stress in the plate will be nearly |
A. | 139 MPa |
B. | 219 MPa |
C. | 336 MPa |
D. | 416 MPa |
Answer» C. 336 MPa | |