Higher Study | Design of Machine Elements | Design Against Fluctuating Load

What strength of the material is to be considered for design of a ductile component under cyclic load?
Which of the following process does NOT affect the fatigue life of a component?
For which one of the following loading conditions is the standard endurance strength multiplied by a load factor, Ke = 0.9?
Which one of the following is the most conservative fatigue failure criterion?
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