If a shaft diameter d is subjected to bending moment M, the bending stress (σb) induced in the shaft is given by:

\({\sigma _b} = \left( {\frac{{16M}}{{\pi {d^3}}}} \right)\)

\({\sigma _b} = \left( {\frac{{32M}}{{\pi {d^3}}}} \right)\)

\({\sigma _b} = \left( {\frac{{32M}}{{\pi {d^2}}}} \right)\)

\({\sigma _b} = \left( {\frac{{64M}}{{\pi {d^4}}}} \right)\)

If a shaft diameter d is subjected to bending moment M, the bending st

1.	If a shaft diameter d is subjected to bending moment M, the bending stress (σb) induced in the shaft is given by:
A.	\({\sigma _b} = \left( {\frac{{32M}}{{\pi {d^3}}}} \right)\)
B.	\({\sigma _b} = \left( {\frac{{16M}}{{\pi {d^3}}}} \right)\)
C.	\({\sigma _b} = \left( {\frac{{32M}}{{\pi {d^2}}}} \right)\)
D.	\({\sigma _b} = \left( {\frac{{64M}}{{\pi {d^4}}}} \right)\)
Answer» B. \({\sigma _b} = \left( {\frac{{16M}}{{\pi {d^3}}}} \right)\)

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If a shaft diameter d is subjected to bending moment M, the bending stress (σb) induced in the shaft is given by:

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