_____________ dished head is the strongest of all?
Correct answer: A. Hemispherical
- A. Hemispherical
- B. Elliptical
- C. Torispherical
- D. None of these
Explanation
A hemispherical head has the most favorable curvature and distributes membrane stress efficiently, allowing it to withstand the greatest pressure for a given thickness. Elliptical and torispherical heads are easier or cheaper to fabricate but are less strong.
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