The principal stresses at a point are 2σ (tensile) and σ (compressiv – McqOptions

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1.	The principal stresses at a point are 2σ (tensile) and σ (compressive), and the stress at elastic limit for the material in simple tension is 210 N/mm2. According to maximum shear stress theory, the value of σ at failure is:
A.	70 N/mm2
B.	105 N/mm2
C.	140 N/mm2
D.	210 N/mm2
Answer» B. 105 N/mm2

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