In the design of shafts made of ductile materials subjected to twisting moment and bending moment, the recommended theory of failure is

maximum principal stress theory

maximum principal strain theory

In the design of shafts made of ductile materials subjected to twistin

1.	In the design of shafts made of ductile materials subjected to twisting moment and bending moment, the recommended theory of failure is
A.	maximum principal stress theory
B.	maximum principal strain theory
C.	maximum shear stress theory
D.	maximum strain-energy theory
Answer» D. maximum strain-energy theory

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In the design of shafts made of ductile materials subjected to twisting moment and bending moment, the recommended theory of failure is

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