If the yield point shear stress obtained from the torsion test of a cylindrical specimen is...

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If the yield point shear stress obtained from the torsion test of a cylindrical specimen is t,, then the maximum value of principal strain at yielding is ( is Poisson's ratio and E is Young's modulus) (A) (C) (1+)t, E Ty 2E (B) (D) (1-)t, E 1/4/14 E If the yield point shear stress obtained from the torsion test of a cylindrical specimen is t,, then the maximum value of principal strain at yielding is ( is Poisson's ratio and E is Young's modulus) (A) (C) (1+)t, E Ty 2E (B) (D) (1-)t, E 1/4/14 E

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