A shaft with a circular cross-section is subjected to pure

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A shaft with a circular cross-section is subjected to pure twisting moment. The ratio of the maximum shear stress to the largest principal stress is

1. 2.0
2. 1.0
3. 0.5
4. 0

Correct Option: B

τ_max = τ_xy
σ₁ = τ_xy

∴	τ_max	= 1
	σ₁