(2) A diesel engine developing 1,850 hp at 105 rpm is used on a ship to drive the propeller. The shaft of the propeller is to be made of 3.5% per cent nickel steel, heat-treated, with an ultimate strength in tension of 130,000 psi, and an ultimate in shear about 70% of the ultimate in tension. Angular twist is limited to 1° in 20 diameters. (a) Using a design factor of 2, find the diameter of solid shaft required. (b) Using the same data, find the diameter of hollow shaft required if the outside diameter is twice the inside diameter. (c) What is the percentage of saving in weight by using the hollow shaft?

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Q: P9-3 The composite shaft, consisting of aluminium, copper, and steel sections, is subjected to the…

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Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.