(a) For a 250 kVA 1100 V 12 pole 500 rpm three phase alternator, determine air gap diameter, core length, number of stator conductors, and number of stator slots and cross section of stator conductors. Assuming average gap density as $0.6 \mathrm{~Wb} / \mathrm{m}^{2}$ and specific electric loading of 30000 amp. cond $/ \mathrm{m}$. $L / \Gamma=1.5$.
Explanation
The design parameters of the alternator are used to calculate the air gap diameter, core length, number of stator conductors, number of stator slots, and cross-section of stator conductors. The calculated values are used to determine the design parameters of the alternator.
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