A direct current (DC) distribution circuit made with copper conductors is 2km long per distributor. Each one of the conductors has a diameter of 10mm and is suitable to carry 50A. The current carrying capacity must however be increased to 200A per conductor. Calculate the diameter of an aluminium conductor, which can be connected in parallel with copper conductor. Take the resistivity of copper to be 0.017microohmm and that of aluminium to be 0.028microohmm.
February 21, 2018
Why do you need formulae? Surely your prof has set the problem to test your ability to think? Think I squared R and cross sectional area. Hope that helps. mike
February 24, 2018
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