# Question Solved1 AnswerConsider the magnetic circuit has a length of 0.6 m an area of0.0018 m2 and a single airgap of length 2.3 mm. The circuit isenergised by a coil. If the core permeability is 1000, by makingsuitable approximations calculate: (i) the number of turns requiredto achieve an inductance of 12 mH; (ii) the inductor current whichwill result in a core flux density of 1.0 T; (iii) A particularapplication uses the same magnetic core but requires the airgapflux density to be increased by a factor of 1.5 while maintainingthe inductance below 17mH. Design a magnetic circuit to do this.(iv) For your design, determine the maximum RMS voltage that can beapplied to the coil to ensure that the peak flux remains below 1.5T

0A76F7 The Asker · Electrical Engineering

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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