Consider the magnetic circuit has a length of 0.6 m an area of 0.0018 m2 and a single airgap of length 2.3 mm. The circuit is energised by a coil. If the core permeability is 1000, by making suitable approximations calculate: (i) the number of turns required to achieve an inductance of 12 mH; (ii) the inductor current which will result in a core flux density of 1.0 T; (iii) A particular application uses the same magnetic core but requires the airgap flux density to be increased by a factor of 1.5 while maintaining the inductance below 17mH. Design a magnetic circuit to do this. (iv) For your design, determine the maximum RMS voltage that can be applied to the coil to ensure that the peak flux remains below 1.5 T

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of cinen magnetis ciruit.||l_(i)=1000,quad1c=0.6m,A=18 xx10^(-4)sm^(2),quad lg=2.3mmi) To required L=12mH. So N well be.{:[R_(g)=(l_(g))/(mu_(0)A)=(2.3 xx10^(-3))/(4pi xx10^(-7)xx18 xx10^(-4))=1016.8KA//omega b],[R_(c)=(l_(c))/(mu_("Mr.A "))=265.26KA//Ab],[R_(T)=R_(g)+R_(c)=1282.06KA//omega b],[L=(N^(2))/(R_(T))=>N=sqrt(12 xx10^(-3)xx1282.06 xx10^(3))=124]:}(i) For filese density B=1T, so phi=BA=1.8mwb{: ... See the full answer