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For a circular shaft of diameter d subjected to torque T, the maximum...

Q.  
For a circular shaft of diameter d subjected to torque T, the maximum value of the shear stress is


Answer & Explanation

Polar moment of inertia for circular shaft of diameter D is Ip=πd^4/32
The maximum shear stress is given by,
{ τ/(D/2) } = T/Ip
τ(max)= 16T/πD³

Thus correct option is: C.

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