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External and internal diameter of a propeller shaft are 400 mm and 200 mm respectively. Find maximum shear stress developed in the cross section when

External and internal diameter of a propeller shaft are 400 mm and 200 mm respectively. Find maximum shear stress developed in the cross section when a twisting moment of 50kNm is applied. Modulus of rigidity, G=8×104 MN/m2 . If span of shaft is 4m, also find twisting angle of shaft.

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