# The torsional rigidity of a shaft is expressed by the _____ ? with Answer - Mechanical Engineering Mcqs | TestPrep

> Solved MCQ: The torsional rigidity of a shaft is expressed by the _____ ? Correct Answer: D. torque required to produce a twist of one radian per unit length of shaft. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# The torsional rigidity of a shaft is expressed by the _____ ?

Direct Answer & Quick Reference

The correct option is **D. torque required to produce a twist of one radian per unit length of shaft**.

A. maximum torque it can transmit

B. number of cycles it undergoes before failure

C. elastic limit up to which it resists torsion, shear and bending stresses

D. torque required to produce a twist of one radian per unit length of shaft **(Correct Answer)**

E. maximum power it can transmit at highest possible-speed

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Verified Key: D. torque required to produce a twist of one radian per unit length of shaft
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Verified against official examination board answer keys and standard curriculum textbooks.

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