Question: A solid circular shaft is to transmit 375kw at 150 r.p.m (i) Find the diameter of the shaft if the shear stress is not to

A solid circular shaft is to transmit 375kw at 150 r.p.m (i) Find the diameter of the shaft if the shear stress is not to exceed 65 N/mm² . (ii) What percent saving in weight would be obtained if this shaft is replaced by a hallow shaft whose internal diameter equal to 2/3 rd of its external diameter, the length the material and maximum shear stress being same.

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