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as we know that N=120f/P
speed of an im can be controled only through changing no if
poles, can we control by changing the frequncy????
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Which of the following alternatives will be cheaper (1) A 100 h.p AC, 3-phase motor (2) Four motors of 25 h.p each (3) Five motors of 20 h.p each (4) 10 motors of 10 h.p each explain
