Machine Design
In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of

Combined effect of transverse shear stress and bending stress in the wire
Combined effect of bending stress and curvature of the wire
Combined effect of torsional shear stress and transverse shear stress in the wire
Combined effect of transverse shear stress and curvature of wire

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Coaxing is the procedure of increasing

Metal strength by cycling
Metal resistance to corrosion by coating
Fatigue limit by over-stressing the metal by successively increasing loadings
Metal hardness by surface treatment

ANSWER DOWNLOAD EXAMIANS APP