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AC Generation Summary
Effective Values

Electrical Science Volume 3 of 4
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AC GENERATION ANALYSIS Basic AC Theory AC GENERATION ANALYSIS Analysis of the AC power generation process and of the alternating current we use in  almost  every  aspect  of  our  lives  is  necessary  to  better  understand  how  AC power is used in today’s technology. EO 1.3 DEFINE    the    following    terms    in    relation    to    AC generation: a. Radians/second b. Hertz c. Period EO 1.4 DEFINE effective value of an AC current relative to DC current. EO 1.5 Given  a  maximum  value,  CALCULATE  the  effective (RMS) and average values of AC voltage. EO 1.6 Given  a  diagram  of  two  sine  waves,  DESCRIBE  the phase relationship between the two waves. Effective Values The output voltage of an AC generator can be expressed in two ways.  One is graphically by use of a sine wave (Figure 3).   The second way is algebraically by the equation e = Emax sin wt, which will be covered later in the text. Figure 3    Voltage Sine Wave ES-07 Page 4 Rev. 0







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