(a) A $15 \mathrm{~kW}, 440 \mathrm{~V}, 4$ pole 50 Hz , three phase induction motor is built with a stator bore 0.25 m and a core length of 0.16 m . The specific electric loading is $23,000 \mathrm{~A} / \mathrm{m}$. Using the data of this machine, determine the core dimensions. number of stator slots and number of stator conductors for a $11 \mathrm{~kW}, 460 \mathrm{~V}, 6$ pole, 50 Hz motor. Assume a full load efficiency of 0.84 and power factor of 0.82 for each machine. The winding factor is 0.955 .
Explanation
The calculation involves several steps, including determining the full load current, core dimensions, number of stator slots, and number of stator conductors. The winding factor is used to calculate the number of conductors per slot.
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