1. For the magnetic circuit given below, the distances constituting the mean core path are given in'k'. There are three coils on the magnetic core. The magnitudes and the directions of the coilcurrents are given in T'. Cross-sectional area and magnetic permeability of the core are constantand uniform. Number of turns for the coils ('N') are the same. 41, d2 and d3 are the fluxesgenerated by currents I,, Iz and I3, respectively.a. Sketch the magnetic equivalent circuit of the core.b. Give the parametrical expression for reluctances.c. Give the parametrical expression for coil MMFS (Amper-Turn).d. Calculate the following ratios;$1/ P2 = ?$2/ P3 = ?P1/ 03 = ?t: Please mind the winding and current directions for flux calculations.k/2k/2b/4NNF1F2

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. For the magnetic circuit given below, the distances constituting the mean core path are given in 'k. There are three coils on the magnetic core. The magnitudes and the directions of the coil currents are given in T'. Cross-sectional area and magnetic permeability of the core are constant and uniform. Number of turns for the coils ('N') are the same. O1, P2 and P3 are the fluxes generated by currents I,, I2 and I3, respectively. a. Sketch the magnetic equivalent circuit of the core. b. Give the parametrical expression for reluctances. Give the parametrical expression for coil MMFS (Amper-Turn). d. Calculate the following ratios; $1/ ¢2 = ? 02/ P3 = ? $1/ ¢z = ? Please mind the winding and current directions for flux calculations. k/2

. For the magnetic circuit given below, the distances constituting the mean core path are given in 'k. There are three coils on the magnetic core. The magnitudes and the directions of the coil currents are given in T'. Cross-sectional area and magnetic permeability of the core are constant and uniform. Number of turns for the coils ('N') are the same. O1, P2 and P3 are the fluxes generated by currents I,, I2 and I3, respectively. a. Sketch the magnetic equivalent circuit of the core. b. Give the parametrical expression for reluctances. Give the parametrical expression for coil MMFS (Amper-Turn). d. Calculate the following ratios; $1/ ¢2 = ? 02/ P3 = ? $1/ ¢z = ? Please mind the winding and current directions for flux calculations. k/2

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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