A ferromagnetic core is shown in Figure 1. There is a small gap of 0.07 cm in the structure of the core and the other di

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A Ferromagnetic Core Is Shown In Figure 1 There Is A Small Gap Of 0 07 Cm In The Structure Of The Core And The Other Di 1 (40.76 KiB) Viewed 65 times

A ferromagnetic core is shown in Figure 1. There is a small gap of 0.07 cm in the structure of the core and the other dimensions' values of the core are shown in the Figure 1. The depth of the core is 5 cm. The relative permeability of the core is 850 and has 300 turns of coil wire. Assume that fringing in the air gap has increased the effective cross-sectional area by 5 percent. a) Draw the magnetic equivalent circuit. Define all the label in your sketch correctly. 13 Marks b) Calculate the total reluctance, R total of the ferromagnetic core including the air gap. 116 Marks c) If 3 A input current is injected to the coil, determine the total flux, Totat that will be produced. 12 Marks d) Determine the magnetic flux density, B in the air-gap and in the top core of the magnetic system 14 Marks 10 cm 300 turns 20 cm Sem 0.07 cm 5 cm 15 cm Figure 1: Ferromagnetic Core