Question No. 234

The stress-strain curve for mild steel is shown in the figure given below. Choose the correct option referring to both figure and table.

 Point on the graph Description of the point P 1.Upper Yield Point Q 2. Ultimate Tensile Strength R 3. Proportionality Limit S 4. Elastic Limit T 5. Lower Yield Point U 6. Failure

Question No. 40

A bar is subjected to fluctuating tensile load from 20 kN to 100 kN. The material has yield strength of 240 MPa and endurance limit in reversed bending is 160 MPa. According to the Soderberg principle, the area of cross-section in mm2 of the bar for a factor of safety of 2 is

Question No. 17

Match the following criteria of material failure, under biaxial stresses ${\sigma }_{1}$ and ${\sigma }_{2}$ and yield stress ${\sigma }_{y}$, with their corresponding graphic representations :