Modulus of elasticity of a material is expressed in

28) Formula for finding the cutting speed of shaper, with 'm' speed ratio is, (L is the stroke length and N is the number of cutting strokes/min)

29) Bearing suitable for heavy radial load is

30) The radial distance between the pitch circle and the tip circle is called

31) A head marking of 8.8 on a fastener demands a tensile strength of