Civil Engineering MCQJE Level Civil Engineering
The polar moment of inertia of a hollow circular shaft of outer diameter D and inner diameter d is
Strength of MaterialsStrength of MaterialsMEDIUM
Choose the correct answer
A
(π/16)(D²−d²)
B
(π/16)(D⁴−d⁴)
C
(π/32)(D⁴−d⁴)
D
(π/64)(D⁴−d⁴)
Correct Answer
C. (π/32)(D⁴−d⁴)
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J = (π/32)(D⁴ − d⁴) for a hollow circular section.
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This MCQ belongs to WBPSC JE (Civil) Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.