A solid shaft of 'D' mm diameter is used to transmit torque, if maximum shear stress induced to the shaft is 'τ' N/mm2, what will the maximum torque transmitted by the shaft? 

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HPCL Engineer Civil 23 Dec 2023 Official Paper
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Answer (Detailed Solution Below)

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Detailed Solution

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Concept:

Using torsion equation:

Where,

T = applied torque, IP = Polar section modulus, τmax = Maximum shear stress in the shaft material, R = Radius of the shaft, G = Modulus of Rigidity, θ = Angle of twist, L = Length of the shaft

R = 

From shear stress criteria:

Substituting the values of  and R we get 

Torque (T) = 

 

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