GATE Mechanical Engineering (ME) 2019 Shift 2 Solved Paper

Formula for endurance limit
σe=Ka×Kb×Kc×Kd×σe′
Where
Ka− Size factor
Kb− Surface factor
Kc - load factor
Kd− Temperature factor
σe′− Endurance Strength
Form above formula it is clear that the Endurance limit increases with increase in size, surface, load, temp and endurance strength.