If \[{{\sigma }_{1}}\],\[{{\sigma }_{2}}\]and\[{{\sigma }_{y}}\]are maximum principal stress, minimum principal stress and yield stress, then according to maximum shear stress theory, which of the following expression satisfies:

\[{{\sigma }_{y}}={{\sigma }^{2}}_{1}+{{\sigma }^{2}}_{2}\]

\[{{\sigma }_{y}}={{\sigma }_{1}}+{{\sigma }_{2}}\]

\[{{\sigma }_{y}}={{\sigma }_{1}}-{{\sigma }_{2}}\]

\[{{\sigma }_{y}}={{\sigma }^{2}}_{1}-{{\sigma }^{2}}_{2}\]

If \[{{\sigma }_{1}}\],\[{{\sigma }_{2}}\]and\[{{\sigma }_{y}}\]are ma

1.	If \[{{\sigma }_{1}}\],\[{{\sigma }_{2}}\]and\[{{\sigma }_{y}}\]are maximum principal stress, minimum principal stress and yield stress, then according to maximum shear stress theory, which of the following expression satisfies:
A.	\[{{\sigma }_{y}}={{\sigma }_{1}}+{{\sigma }_{2}}\]
B.	\[{{\sigma }_{y}}={{\sigma }_{1}}-{{\sigma }_{2}}\]
C.	\[{{\sigma }_{y}}={{\sigma }^{2}}_{1}+{{\sigma }^{2}}_{2}\]
D.	\[{{\sigma }_{y}}={{\sigma }^{2}}_{1}-{{\sigma }^{2}}_{2}\]
Answer» C. \[{{\sigma }_{y}}={{\sigma }^{2}}_{1}+{{\sigma }^{2}}_{2}\]

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If \[{{\sigma }_{1}}\],\[{{\sigma }_{2}}\]and\[{{\sigma }_{y}}\]are maximum principal stress, minimum principal stress and yield stress, then according to maximum shear stress theory, which of the following expression satisfies:

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