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Pick out the wrong statement. | |
A. | The equivalent stiffness of two springs (of equal stiffness 'S') in series is S/2 while in parallel is 2S. [Wrong Answer] |
B. | For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire diameter) [Wrong Answer] |
C. | Crushing load or columns is less than the buckling load. [Correct Answer] |
D. | Modulus of resilience is proportional to ( stress at elastic limit)2 . [Wrong Answer] |