Fatigue strength of a rod subjected to cyclic axial force is less than that of a rotating beam of the same dimensions subjected to steady lateral force because

A large uniform plate containing a rivet hole is subjected to uniform uniaxial tension of $$95$$ $$MPa.$$ The maximum stress in the plate is

In $$PTP$$ type of $$NC$$ system

Two shafts $$A$$ and $$B$$ have their diameters specified as $$100 \pm 0.1\,\,mm$$ and $$0.1 \pm 0.0001\,\,mm$$ respectively. Which of the following statements is/are true