93 From a tension test the yield strength of steel is found to be 200 N mm Using a factor of safety of 2 0 and applying maximum

Question

93 From a tension test the yield strength of steel is found to be 200 N mm Using a factor of safety of 2 0 and applying maximum principal stress theory of failure the permissible stress in the steel shaft subjected to torque will be a 50 N mm b 57 7 N mm Ap c 86 6 N mm d 100 N mm

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