This document discusses fundamentals of transformers and electric machines. It includes figures and MATLAB code showing sinusoidal voltage and current waveforms, with the current waveform delayed or advanced in phase relative to the voltage. The document is a class lecture on the topic presented by Dr. Lionel R. Orama and includes copyright notices on each page.

1. Fundamentos de
Transformadores y Máquinas
Eléctricas
Dr. Lionel R. Orama Exclusa, PE
Clase 1

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Figura 1

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>>t=[0:.0003125:.02];
>>vt=120*sqrt(2)*sin(377*t);
>> it=15*sqrt(2)*sin(377*t-pi/6);
>> plot(t,vt,'b',t,it,'r'),grid
>> title('SENOSOIDES, Voltaje
>> y Corriente')
>> ylabel('amplitud')
>> xlabel('tiempo')
atrasada

6. >> it=15*sqrt(2)*sin(377*t+pi/6);
adelantada
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