When its coil rotates at a frequency of 280 Hz, a certaingenerator has a peak em

Question

When its coil rotates at a frequency of 280 Hz, a certaingenerator has a peak emf of 75V. (a) What is thepeak emf of the generator when its coil rotates at a frequency of45 Hz? (b) Determine the frequency of the coil'srotation when the peak emf of the generator is 180V. Please Help When its coil rotates at a frequency of 280 Hz, a certaingenerator has a peak emf of 75V. (a) What is thepeak emf of the generator when its coil rotates at a frequency of45 Hz? (b) Determine the frequency of the coil'srotation when the peak emf of the generator is 180V. Please Help

Explanation / Answer

U=-df/dt Peak emf U=B*S*?. so U/f=U'/f' a) U=(75/280) *45=12.05(V) b) f'=U'/U *f=180/75 *280=672(Hz)

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