Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

Direct shear stress only
Bending stress only
A combination of torsional shear stress and bending
A combination of bending stress and direct shear stress

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Coaxing is the procedure of increasing

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

ANSWER DOWNLOAD EXAMIANS APP