A magnetic circuit is made of mild steel arranged as shown below. The centre limb is wound with 500 turns and has a cross-sectional area of 800 mm. Each of the outer limbs has a cross-sectional area of 500 mm. The air gap has a length of 1.0 mm. Calculate the current required to set up a flux of 1.3 mWb in the centre limb, assuming no magnetic leakage and fringing. The mean lengths of the various magnetic paths are shown on the diagram. B (T) 1.7 1.6 1.5 I mm 120 300 300 1.4 mm mm mm 1.3 1.2 1000 2000 3000 4000 5000 H (A/m) Magnetization characteristic of mild steel

A magnetic circuit is made of mild steel arranged as shown below. The centre limb is wound with 500 turns and has a cross-sectional area of 800 mm. Each of the outer limbs has a cross-sectional area of 500 mm. The air gap has a length of 1.0 mm. Calculate the current required to set up a flux of 1.3 mWb in the centre limb, assuming no magnetic leakage and fringing. The mean lengths of the various magnetic paths are shown on the diagram. B (T) 1.7 1.6 1.5 I mm 120 300 300 1.4 mm mm mm 1.3 1.2 1000 2000 3000 4000 5000 H (A/m) Magnetization characteristic of mild steel

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.1MCQ: The Ohms law for the magnetic circuit states that the net magnetomotive force (mmf) equals the...

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