Civil Engineering MCQJE Level Civil Engineering
A thin-walled cylindrical pressure vessel of diameter d and wall thickness t subjected to internal pressure p has a hoop (circumferential) stress of:
Strength of MaterialsThin Cylinder Hoop StressMEDIUM
Choose the correct answer
A
sigma_h = pd / t
B
sigma_h = pd / (2t)
C
sigma_h = pd / (4t)
D
sigma_h = 2pd / t
Correct Answer
B. sigma_h = pd / (2t)
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Thin cylinder: hoop stress sigma_h = pd/(2t); longitudinal stress sigma_L = pd/(4t). Hoop stress governs design (sigma_h = 2 x sigma_L). For a thin spherical vessel: sigma = pd/(4t) (equal in all directions). Condition for thin wall: t/d < 1/20 (or d/t > 20).
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This MCQ belongs to SSC JE Civil Paper-I Technical Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.