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  3. soalan 3 question 3 2 cm cm 05 cm n...

Question: soalan 3 question 3 2 cm cm 05 cm n...

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Soalan 3 Question 3 2 cm cm 0.5 cm N 500 Core thickness 3 cm Rajah S3/ Figure Q3 Pertimbangkan teras magnetik dengan jurang udara seperti ditunjukkan dalam Rajah S3. Bahan teras mempunyai kebolehtelapan relatif 6000 dan keratan rentas segi empat tepat 2cm x 3cm. Gegelung mempunyai 500 lilitan. Diberikan bahawa kebolehtelapan rang kosong ialah μ。-4π x 10-7 Consider the magnetic core with an air gap as shown in Figure Q3. The core material has a relative pemeability of 6000 and a rectangular cross section 2cm x 3cm. The coil has 500 turns. Given that permeability of free space is Ho 4n x 10- a) Lukiskan litar magnet yang berkenaarn Draw the equivalent magnetic circuit. (2 markah/marks) b) Tentukan keratan rentas (Acore) dan engganan (Rcore) untuk teras Determine the cross-sectional area (Acore) and reluctance (Rcore) of the core (4 markah/marks) c) Tentukan keratan rentas (Agap) dan engganan (Rgap) untuk jurang udara, di mana kesan fringing tidak boleh diabaikan Determine the cross-sectional area (Agap) and reluctance (Rgap) of the air-gap, which the fringing effect cannot be ignored (4 markah/marks) d) Tentukan arus yang diperlukan untuk mendapat kepadatan fluks Bgap 0.251 dalam jurang udara Determine the current required to establish a flux density of Bap 0.25T in the air gap. (5 markah/marks)

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