1.

The inner diameter of a cylindrical tank for liquefied gas is 250 mm. The gas pressure is limited to 15 MPa. The tank is made of plain carbon steel with ultimate tensile strength of 340 N/mm2, Poisson's ratio of 0.27 and the factor of safety of 5. The thickness of the cylinder wall will be

A. 60 mm
B. 50 mm
C. 40 mm
D. 30 mm
Answer» E.


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