• # question_answer Angle of twist of a shaft of diameter d? is inversely proportional to: A) d                                 B) ${{d}^{2}}$C) ${{d}^{3}}$                          D) ${{d}^{4}}$

Correct Answer: D

Solution :

$\frac{T}{J}=\frac{G\theta }{l}$ $\theta =\frac{Tl}{GJ}\infty \frac{1}{{{d}^{4}}}$

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