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Determine the diameter of the bolts used in rigid flange coupling if transmitted torque is 270N-m, pitch circle diameter=125mm and four bolts are emplace in the coupling. Permissible shear stress in the bolts is 70N/mm².

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Determine the diameter of the bolts used in rigid flange coupling if transmitted torque is 270N-m, pitch circle diameter=125mm and four bolts are emplace in the coupling. Permissible shear stress in the bolts is 70N/mm².

(a) 3.8mm

(b) 3.6mm

(c) 4.4mm

(d) 4mm

I have been asked this question during revision.

The query is from the Clamp Coupling & Rigid Flange & Coupling Bushed Pin Flexible Coupling topic in unit Shafts, Keys and Couplings of Machine Design

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