A solid shaft of diameter ‘D’ carries a twisting moment that develops maximum shear stress τ. If this shaft is replaced by a hollow one of outside diameter D and inside diameter D/2, then the maximum shear stress will be

A solid shaft of diameter ‘D’ carries a twisting moment that devel

1.	A solid shaft of diameter ‘D’ carries a twisting moment that develops maximum shear stress τ. If this shaft is replaced by a hollow one of outside diameter D and inside diameter D/2, then the maximum shear stress will be
A.	1.067τ
B.	1.145τ
C.	1.335τ
D.	2τ
Answer» B. 1.145τ

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A solid shaft of diameter ‘D’ carries a twisting moment that develops maximum shear stress τ. If this shaft is replaced by a hollow one of outside diameter D and inside diameter D/2, then the maximum shear stress will be

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