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+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:859464a7b9c1dff7d24f65e6024e51cc8bc55fc7979a3e8c04919720ca49d3b9"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 15 Classification of Magnetic Materials"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.1 Page no 457"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "q=0.12 #TA**-1m\n",
+ "q1=4*math.pi*10**-7 #TA**-1m\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "q3=q/q1\n",
+ "e=q3-1\n",
+ "\n",
+ "#Result\n",
+ "print\"Relative permeability is\",round(q3*10**-4,2),\"10**4\"\n",
+ "print\"susceptibility is\",round(e*10**-4,2),\"10**4\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Relative permeability is 9.55 10**4\n",
+ "susceptibility is 9.55 10**4\n"
+ ]
+ }
+ ],
+ "prompt_number": 17
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.2 Page no 457"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "A=0.5*10**-4 #m**2\n",
+ "H=1200 #Am**-1\n",
+ "W=599\n",
+ "Q=4*math.pi*10**-7 #TA\"**-1m\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "Z=Q*(1+W)\n",
+ "Z1=Z*H\n",
+ "Z2=Z1*A\n",
+ "\n",
+ "#Result\n",
+ "print\"(i) Z produced is\",round(Z*10**4,2),\"10**-4\",\"TA**-1m\"\n",
+ "print\"(ii) Z1 produced is\",round(Z1,3),\"T\"\n",
+ "print\"(iii) Z2 produced is\",round(Z2*10**5,3),\"10**-5\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(i) Z produced is 7.54 10**-4 TA**-1m\n",
+ "(ii) Z1 produced is 0.905 T\n",
+ "(iii) Z2 produced is 4.524 10**-5\n"
+ ]
+ }
+ ],
+ "prompt_number": 66
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.3 Page no 457"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "I=1.2 #A\n",
+ "Q=800\n",
+ "A=0.15 #m\n",
+ "S=3500\n",
+ "K=4*math.pi*10**-7\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "L=2*math.pi*A\n",
+ "n=S/L\n",
+ "B=(K*Q*S*I)/L\n",
+ "\n",
+ "#Result\n",
+ "print\"The magnetic field in the core for a magnetising current of 1.2 A is\",B,\"T\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The magnetic field in the core for a magnetising current of 1.2 A is 4.48 T\n"
+ ]
+ }
+ ],
+ "prompt_number": 73
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.4 Page no 457"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "H=2*10**3 #Am**-1\n",
+ "I=4.8*10**-2 #Am**-1\n",
+ "T=280 #K\n",
+ "T1=320.0 #K\n",
+ "\n",
+ "#Calculation\n",
+ "S=I/H\n",
+ "S1=S*(T/T1)\n",
+ "S2=S1*H\n",
+ "\n",
+ "#Result\n",
+ "print\"The susceptibility of aluminium is raised to 280 k is\",S*10**5,\"10**3\"\n",
+ "print\"The temperature of the aluminium is raised to 320 k is\",S1\n",
+ "print\"The suscepitibility and intensity of magnetistionis\",S2*10**2,\"10**-2\",\"Am**-1\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The susceptibility of aluminium is raised to 280 k is 2.4 10**3\n",
+ "The temperature of the aluminium is raised to 320 k is 2.1e-05\n",
+ "The suscepitibility and intensity of magnetistionis 4.2 10**-2 Am**-1\n"
+ ]
+ }
+ ],
+ "prompt_number": 90
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.5 Page no 458"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "W=3.2*10**4 #J\n",
+ "M=8.4\n",
+ "D=7200\n",
+ "v=50 #cycle s**-1\n",
+ "T=30*60 #s\n",
+ "\n",
+ "#Calculation\n",
+ "V=M/D\n",
+ "Q=W/(V*v*T)\n",
+ "\n",
+ "#Result\n",
+ "print\"The value of energy is\",round(Q,1),\"J m**-3 cycle**-1\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of energy is 304.8 J m**-3 cycle**-1\n"
+ ]
+ }
+ ],
+ "prompt_number": 95
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.6 Page no 458"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "m=4.5 #Am\n",
+ "l=0.06 #m\n",
+ "A=0.9*10**-4 #m**2\n",
+ "r=0.06 #m\n",
+ "J=4*math.pi*10**-7\n",
+ "\n",
+ "#Calculation\n",
+ "I=m/A\n",
+ "H1=m/(4*math.pi*r**2)\n",
+ "H2=m/(4*math.pi*r**2)\n",
+ "H=H1+H2\n",
+ "B=J*(-H+I)\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) Intensity of the magnetisation is\", I*10**-4,\"10**4 A/m\"\n",
+ "print\"(b) Magnetic intensity is\",round(H,0),\"A/m\"\n",
+ "print\"(c) Magnetic induction is\",round(B*10**2,2),\"*10**-2 T\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) Intensity of the magnetisation is 5.0 10**4 A/m\n",
+ "(b) Magnetic intensity is 199.0 A/m\n",
+ "(c) Magnetic induction is 6.26 *10**-2 T\n"
+ ]
+ }
+ ],
+ "prompt_number": 16
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 15.7 Page no 458"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "m=1.5*10**-23 #J/T\n",
+ "n=2.0*10**24\n",
+ "a=15 #%\n",
+ "T1=4.2 #K\n",
+ "T2=2.8\n",
+ "B1=0.84 #T\n",
+ "B2=0.98\n",
+ "\n",
+ "#Calculation\n",
+ "M=m*n\n",
+ "M1=M*(a/100.0)\n",
+ "M2=M1*T1*B2/(T2*B1)\n",
+ "\n",
+ "#Result\n",
+ "print\"Total dipole moment is\",M2,\"J/T\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Total dipole moment is 7.875 J/T\n"
+ ]
+ }
+ ],
+ "prompt_number": 18
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-22 16:11:55 +0000