UPSC Civil Service Exam Questions

Q1: Two closed thin vessels, one cylindrical and the other spherical with equal internal diameter and wall thickness are subjected to equal internal fluid.pressure. The ratio of hope stresses in the cylindrical to that of spherical vessels is

A 4.0

B 2.0

C 1.0

D 0.5

ANS:B - 2.0

Hoop stress for cylinder=Pd/2t,
Hoop stress for spherical=Pd/4t,
So, the answer will be "2".



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