Machine Design The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils) Gd⁴/ 4D3n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 8D²n Gd⁴/ 4D3n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 8D²n ANSWER DOWNLOAD EXAMIANS APP
Machine Design The endurance limit for a mirror polished material will be __________ as compared to unpolished material. Less More None of these Same Less More None of these Same ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that The effect of the restraining action of the heads at the end of the pressure vessel is neglected All of these The effect of curvature of the cylinder wall is neglected The tensile stresses are uniformly distributed over the section of the walls The effect of the restraining action of the heads at the end of the pressure vessel is neglected All of these The effect of curvature of the cylinder wall is neglected The tensile stresses are uniformly distributed over the section of the walls ANSWER DOWNLOAD EXAMIANS APP
Machine Design Stress concentration in cyclic loading is more serious in Ductile materials Equally serious in both cases Brittle materials Depends on other factors Ductile materials Equally serious in both cases Brittle materials Depends on other factors ANSWER DOWNLOAD EXAMIANS APP
Machine Design A screw is specified by its Major diameter Minor diameter Pitch Pitch diameter Major diameter Minor diameter Pitch Pitch diameter ANSWER DOWNLOAD EXAMIANS APP
Machine Design The application of third type levers is found in Lever of a loaded safety valve Hand wheel of a punching press A pair of tongs Handle of a hand pump Lever of a loaded safety valve Hand wheel of a punching press A pair of tongs Handle of a hand pump ANSWER DOWNLOAD EXAMIANS APP
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