General Studies · Strength of Materials
Which of the following statements is INCORRECT regarding pure torsion acting on a circular structural shaft?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The cross-sectional radii remain straight after rotation.
- 2Torsion is the twisting of a structural member subjected to a couple that produces rotation about its longitudinal axis.
- 3It causes rotation of all cross-sectional fibers about the longitudinal axis.
- 4The force required for torsion is normal to the longitudinal axis and acts exactly at the centroid.✓
Correct answer
The force required for torsion is normal to the longitudinal axis and acts exactly at the centroid.
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