In $$NC$$ part programming spindle speed of $$730rpm$$ will be coded by the magic - $$3$$ rule as

An elastic body is subjected to a tensile stress $$X$$ in a particular direction and a compressive stress $$Y$$ in its perpendicular direction. $$X$$ and $$Y$$ are unequal in magnitude. On the plane of maximum shear stress in the body there will be:

A cylindrical elastic body subjected to pure torsion about its axis develops:

For a simply supporting beam on two end supports the Bending Moment is maximum: