Create a MatLab program that models the behavior of a rotating magnetic field in the three phase stator shown in figure
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- Number of poles (P): This represents the number of magnetic poles in the rotor. It determines the speed of rotation of the magnetic field. - Frequency (f): This represents the frequency of the alternating current (AC) supplied to the stator windings. It Show more…
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The magnetic field produced in the air gap of an induction motor by the stator windings is given by $B=B_{m} \cos (\omega t-2 \theta),$ in which $\theta$ is angular displacement in the counterclockwise direction as illustrated in Figure 17.4 on page $814 .$ How many poles does this machine have? Given that the frequency of the source is $50 \mathrm{Hz}$, determine the speed of rotation of the field, Does the field rotate clockwise or counterclockwise? Repeat for a field given by $B=B_{m} \cos (\omega t+3 \theta)$.
Figure 28.20 a shows a Helmholtz coil used to generate uniform magnetic fields. Suppose the Helmholtz coil consists of two sets of coaxial wire loops with 15 turns of radius $R=75.0 \mathrm{~cm},$ which are separated by $R$, and each coil carries a current of 0.123 A flowing in the same direction. Calculate the magnitude and the direction of the magnetic field in the center between the coils.
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