From 64d949698432e05f2a372d9edc859c5b9df1f438 Mon Sep 17 00:00:00 2001 From: kinitrupti Date: Fri, 12 May 2017 18:40:35 +0530 Subject: Revised list of TBCs --- .../Chapter18.ipynb | 251 +++++++++++++++++++++ 1 file changed, 251 insertions(+) create mode 100755 backup/Materials_Science_version_backup/Chapter18.ipynb (limited to 'backup/Materials_Science_version_backup/Chapter18.ipynb') diff --git a/backup/Materials_Science_version_backup/Chapter18.ipynb b/backup/Materials_Science_version_backup/Chapter18.ipynb new file mode 100755 index 00000000..287d3fc7 --- /dev/null +++ b/backup/Materials_Science_version_backup/Chapter18.ipynb @@ -0,0 +1,251 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:6d6e15c1e7376b50229c166646322c80b0a7d8183966dd1596145061fc9a1c4d" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter18:Magnetic Materials" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex18.1:pg-346" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Example 18.1 : magnetization and flux density\n", + "import math\n", + "#given data :\n", + "mu0=4*math.pi*10**-7;\n", + "H=10**4;# in A/m\n", + "Xm=3.7*10**-3;# room temperature\n", + "mu_r=1+Xm;\n", + "B=mu0*mu_r*H;\n", + "M=Xm*H;\n", + "print B,\"= the flux density,B(Wb/m**2) \"\n", + "print M,\"= magnetization,M(A/m) \"\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0.0126128661856 = the flux density,B(Wb/m**2) \n", + "37.0 = magnetization,M(A/m) \n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex18.2a:pg-350" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Example 18.2.a : saturation magnetization\n", + " \n", + "#given data :\n", + "mu_b=9.27*10**-24;# A.m**2\n", + "p=8.9; # in g/cm**3\n", + "Na=6.023*10**23;# avogadro's number\n", + "A=58.71; # in g/mol\n", + "n=((p*Na)/A)*10**6;\n", + "Ms=0.60*mu_b*n;\n", + "print Ms,\"= saturation magnetization,Ms(A/m) \"\n", + "# the answe ris slightly different in textbook due to approximation" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "507834.0 = saturation magnetization,Ms(A/m) \n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex18.2b:pg-350" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Example 18.2.b : saturation flux density\n", + "import math\n", + "#given data :\n", + "\n", + "mu0=4*math.pi*10**-7;\n", + "mu_b=9.27*10**-24;# A.m**2\n", + "p=8.9; # in g/cm**3\n", + "Na=6.023*10**23;# avogadro's number\n", + "A=58.71; # in g/mol\n", + "n=((p*Na)/A)*10**6;\n", + "Ms=0.60*mu_b*n;\n", + "Bs=mu0*Ms;\n", + "print round(Bs,2),\"= saturation flux density,Bs(tesla) \"\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0.64 = saturation flux density,Bs(tesla) \n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex18.3:pg-351" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Example 18.3 : magnetic moment\n", + "import math \n", + "#given data :\n", + "\n", + "mu0=4*math.pi*10**-7;\n", + "mu_b=9.27*10**-24;# A.m**2\n", + "p=8.9; # in g/cm**3\n", + "Na=6.023*10**23;# avogadro's number\n", + "A=58.71; # in g/mol\n", + "n=((p*Na)/A)*10**6;\n", + "Bs=0.65;#in Wb/m**2\n", + "Ms=Bs/mu0;\n", + "m_mu_b=Ms/n;\n", + "print round(m_mu_b,26),\" is saturation magnetisation,m_mu_b(A.m**2) \"\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "5.67e-24 is saturation magnetisation,m_mu_b(A.m**2) \n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex18.4:pg-355" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Example 18.4 : power loss\n", + " \n", + "#given data :\n", + "V=0.01;#in m**3\n", + "f=50;# in Hz\n", + "area=600;#in jm**-1\n", + "Wh=area*V*f;\n", + "print Wh,\"= power loss,Wh(watts) \"\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "300.0 = power loss,Wh(watts) \n" + ] + } + ], + "prompt_number": 12 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex18.5:pg-355" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Example 18.4 : los of energy\n", + " \n", + "#given data :\n", + "mass=10.0;# in kg\n", + "energy_loss=250.0;# in J/m**2\n", + "#energy loss at the rate of 50 cycles/s\n", + "E=energy_loss*50.0;# in J/m**3\n", + "E_loss=E*3600.0;#in J/m**3\n", + "D=7500.0;#density in kg/m**3\n", + "Volume=mass/D;\n", + "energy_loss_per_hour=E_loss/Volume;\n", + "print energy_loss_per_hour,\"= energy_loss_per_hour(J/hour) \"\n", + "\n", + "# answer is incorrect in textbook" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "33750000000.0 = energy_loss_per_hour(J/hour) \n" + ] + } + ], + "prompt_number": 22 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit