Determine the r.m.s. value of the line voltage when the winding are connected

Posted on 2014-02-04 14:42:00 in Physics by HOWARD

The phase e.m.f. wave of a 3-phase alternator consists of fundamental with 30 percent harmonic and 10 percent 5^th harmonic. If the amplitude of the fundamental is 100 volts. Determine the r.m.s. value of the line voltage when the winding are connected (a) in star (b) in mesh (c) ratio of line voltage to phase voltage in case (a) and (d) the circulating current in case (b) if the leakage reactance of each  phase is 5 ? for triple frequency Neglect resistance.

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