engineering recuitment HPCL Engineer Mock Test 2024 Strength of Materials Principal Stress or Strain Principle Stress
At a certain point in a structural member, the value of σx = −45 N/mm2, σy = 75 N/mm2 and τ = 45 N/mm2. The principal stresses will be
1
120 N/mm2 and 30 N/mm2
2
120 N/mm2 and −30 N/mm2
3
90 N/mm2 and 60 N/mm2
4
90 N/mm2 and −60 N/mm2