104年 - 104 國立嘉義大學_碩士班(甲組)招生考試試題_生物機電工程學系：材料力學#146326

1. A shaft of 3 m long transmits 20kW with 120rpm. Determine the minimum diameter of the shaft if the allowable shear stress and torque angle are 40MPa and 6o, respectively. (Assume G=84GPa) .(25%)

(a) the principal stresses and principal planes,

(b) the maximum shear stresses. (25%)

(a) Hooke’s law

(b) Ultimate stress

(c) Saint Venant’s principle

(d) Yield point at 0.2 % offset

(e)Statically indeterminate

4. Draw the shear-force and bending-moment diagrams for the beam shown by the area method. (25%)