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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Answer Posted / seenivasan
Frequency is not a constant one.it will vary in between
47-49hz during transmisson.if it goes less r more than these
range transformer ll trip.as we know VFD(variable Frequency
Drives).So by using frequency we ll control the electrical
equipments.
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