For eliminating n^th harmonic from the EMF generated in the phase of a 3-phase alternator, the chording angle should be ______________
(a) n∗full pitch
(b) (1/n)∗full pitch
(c) (2/n)∗full pitch
(d) (3/n)∗full pitch
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I'm obligated to ask this question of EMF Polygon topic in chapter Synchronous Machines of Electrical Machines