?The armature of a simple ac generator has 50 circular loops of wire, each with

Question

?The armature of a simple ac generator has 50 circular loops of wire, each with a radius of 10 cm. It is rotated with a frequency of 60 Hz in a uniform magnetic field of 750 mT .

WHY is it "t=T/2" my formula sheet says it's T=1/f. WHERE does the 2 come from?

The armature of a simple ac generator has 50 circular loops of wire, each with a radius of 10 cm. It is rotated with a frequency of 60 Hz in a uniform magnetic field of 750 mT 20.20) a) What is the maximum emf induced in the loops? EMF-NBAOF (50) * (0.75) * (0.1^2) * (2)" (T) * (60) = 444·132V b) How often is this value attained? t = T/2 8.33x 10A-3 s c) If the time period in part B were cut in half, what would be the new maximum emf value? The new maximum induced emf is Here T"T/2 e = NBA (4t/T) = NBA(4tf) = 2(E) -2 (444.132V) From part (a) 888.264

Explanation / Answer

Maximum induced emf is attained in positive half cycle as well as negative half cycle of ac generator.

Period of AC generator is T .

For one cycle of AC generator ,maximum induced emf occured in two times i.e., in positive half cycle and negative half cycle.

So, time taken to attain maximum induced emf t = Period of AC generator / 2

                                              t = T/2

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