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-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:0a1f9cbfac6e4a80fe362c0012a4a307feac15a79ecc69bd2a9d9a5220fc3bbc"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "Chapter21-Magnetic Materials"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Ex1-pg612"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import math\n",
-      "##Example 21.1\n",
-      "##calculation of magnetizing force and relative permeability\n",
-      "\n",
-      "##given values\n",
-      "M=2300.;##magnetization in A/m\n",
-      "B=.00314;##flux density in Wb/m**2\n",
-      "u=12.57*10**-7.;##permeability in H/m\n",
-      "\n",
-      "##calculation\n",
-      "H=(B/u)-M;\n",
-      "print'%s %.2f %s'%('magnetizing force(in A/m)is ',H,'');\n",
-      "Ur=B/(u*H);\n",
-      "print'%s %.2f %s'%('relative permeability is',Ur,'')\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "magnetizing force(in A/m)is  198.01 \n",
-        "relative permeability is 12.62 \n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Ex2-pg613"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import math\n",
-      "##Example 21.2\n",
-      "##calculation of magnetization and magnetic flux density\n",
-      "\n",
-      "##given values\n",
-      "H=10**5;##external field  in A/m\n",
-      "X=5*10**-5;##susceptibility \n",
-      "u=12.57*10**-7;##permeability in H/m\n",
-      "\n",
-      "##calculation\n",
-      "M=X*H;\n",
-      "print'%s %.2f %s'%('magnetization (in A/m)is ',M,'');\n",
-      "B=u*(M+H);\n",
-      "print'%s %.2f %s'%('magnetic flux density (in wb/m^2) is',B,'')\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "magnetization (in A/m)is  5.00 \n",
-        "magnetic flux density (in wb/m^2) is 0.13 \n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Ex3-pg615"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import math\n",
-      "##Example 21.3\n",
-      "##calculation of relative permeability\n",
-      "\n",
-      "##given values\n",
-      "\n",
-      "X=3.7*10**-3;##susceptibility at 300k\n",
-      "T=300;##temp in K\n",
-      "T1=200;##temp in K\n",
-      "T2=500;##temp in K\n",
-      "\n",
-      "##calculation\n",
-      "C=X*T;##curie constant\n",
-      "XT1=C/T1;\n",
-      "print'%s %.4f %s'%('relative permeability at T1 is ',XT1,'');\n",
-      "XT2=C/T2;\n",
-      "print'%s %.3f %s'%('relative permeability at T2 is',XT2,'')\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "relative permeability at T1 is  0.0056 \n",
-        "relative permeability at T2 is 0.002 \n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
-\ No newline at end of file