For Hollow Shafts, an examiner focuses on material removed from the core of a circular shaft. Which option is valid? Avoid the common trap that maximum torsional stress occurs at the inner radius.
Choose the correct answer
a hollow shaft can be more efficient by placing material away from the centre
maximum torsional stress occurs at the inner radius
removing core material always reduces strength in the same proportion as area
polar moment depends only on area
Correct Answer
A. a hollow shaft can be more efficient by placing material away from the centre
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Torsional resistance benefits from material at larger radius. Correct option: A.
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This MCQ belongs to RRB JE Civil & Allied Engineering CBT-2 Full Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.