GATE Mechanical Engineering (ME) 2017 Shift 2 Solved Paper

A machine component made of a ductile material is subjected to a variable loading with σ_min = -50 MPa and σ_max = 50 MPa. If the corrected endurance limit and the yield strength for the materials are σ_e = 100 MPa and σ_y = 300 MPa, respectively, the factor of safety is ________.