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Question

For the design of a cast iron member, the most appropriate theory of failure is

A

Mohr's theory

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B

Rankine's theory

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C

Maximum stress theory

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D

Maximum shear energy theory

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Solution

The correct option is B Rankine's theory
The maximum principal stress theory i.e., the Rankine's theory is suitable for Brittle materials such as cast iron. The maximum shear stress theory is suitable for ductile metals.

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