Generally, elliptical dished heads

Question

Options:

A . Are manufactured on 2:1 ratio of major to minor axis and is recommended to be used for pressure vessels operating above a pressure of 1.5 MN/m²

B . Resist half the pressure rating compared to hemi spherical head provided on the cylindrical shell of the same thickness and diameter

C . Are approximately as strong as seamless cylindrical shell having the corresponding I.D and O.D

D . All of the above

Answer: Option D

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