engineering recuitment TNPSC AE Civil 2024 Test series Strength of Materials Principal Stress or Strain
A bar is subjected to a uniform tensile stress of 100 N/mm2. Find the intensity of normal stress on a plane the normal to which is inclined 30° to the axis of the bar:
1
100 N/mm2
2
80 N/mm2
3
60 N/mm2
4
75 N/mm2