Question

Electrical power from a generator is transmitted through a power line 175 km long with a resistance of 1.2 Ω /km. The generator’s output is 50 A at its operating voltage of 440 V. This output is increased by a single step-up for transmission at 44 kV.
(a) How much power is lost as joule heat during the transmission?
(b) What must be the turn ratio of a transformer at the delivery point in order to provide an output voltage of 220 V? (Neglect the voltage drop in the line.)


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  • CreatedAugust 29, 2015
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