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Diffstat (limited to 'Electronic_Devices_And_Circuits/EDC_ch_7.ipynb')
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diff --git a/Electronic_Devices_And_Circuits/EDC_ch_7.ipynb b/Electronic_Devices_And_Circuits/EDC_ch_7.ipynb new file mode 100755 index 00000000..141aa7dd --- /dev/null +++ b/Electronic_Devices_And_Circuits/EDC_ch_7.ipynb @@ -0,0 +1,287 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 7: Magnetic Materials"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "example 7.1, Page No.252"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Horizontal component of magnetic Intensity\n",
+ "import math\n",
+ "\n",
+ "#variable declaration\n",
+ "Bo=1.7*10**-5 #in weber/m^2\n",
+ "meu_o=4*math.pi*10**-7 #permeability of free space in weber/amp-meter\n",
+ "\n",
+ "#Calculations\n",
+ "H=Bo/meu_o #in A/m\n",
+ "\n",
+ "#result\n",
+ "print(\"Horizontal component of magnetic filed intensity in A/m : %.1f\"%H);"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Horizontal component of magnetic filed intensity in A/m : 13.5\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "exammple 7.2, Page No. 252"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Current through solenoid\n",
+ "import math\n",
+ "#variable Declaration\n",
+ "H=5*10**3 #in Ampere-turns/m\n",
+ "l=10 #in cm\n",
+ "l=l*10**-2 #in meter\n",
+ "N=50 #no. of turns\n",
+ "n=N/l #no. of turns per unit length\n",
+ "\n",
+ "#Calculation\n",
+ "#Formula : H=n*i\n",
+ "i=H/n #in Ampere\n",
+ "\n",
+ "#Result\n",
+ "print(\"Current should be sent through solenoid in Ampere : %.0f\"%i)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Current should be sent through solenoid in Ampere : 10\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "example 7.3, page no.252"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Magnetic moment of rod\n",
+ "import math\n",
+ "#variable declaration\n",
+ "meu_r=1000 #relative permeability\n",
+ "n=5 #turns/cm\n",
+ "n=n*10**2 #turns/meter\n",
+ "i=0.5 #in Ampere\n",
+ "Volume=10**-4 #in m^3\n",
+ "\n",
+ "#calculation\n",
+ "I=(meu_r-1)*n*i #in Ampere\n",
+ "MagneticMoment=I*Volume #in Ameter^2\n",
+ "\n",
+ "#Result\n",
+ "print(\"Magnetic moment of the rod in Ampere-meter^2 : %.0f\"%(math.ceil(MagneticMoment)))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Magnetic moment of the rod in Ampere-meter^2 : 25\n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "example 7.4, Page No.253"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Flux density magnetic intensity and permeability\n",
+ "import math\n",
+ "#variable Declaration\n",
+ "l=30 #in cm\n",
+ "l=l*10**-2 #in meter\n",
+ "A=1 #in cm^2\n",
+ "A=A*10**-4 #in meter^2\n",
+ "N=300 #turns of wire\n",
+ "i=0.032 #in Ampere\n",
+ "FI_B=2*10**-6 #in weber\n",
+ "meu_o=4*math.pi*10**-7 #permeability of free space in weber/amp-meter\n",
+ "\n",
+ "#Calculations\n",
+ "B=FI_B/A #in weber/meter^2\n",
+ "H=N*i/l #in amp-turn/meter\n",
+ "meu=B/H #in weber/Amp-meter\n",
+ "meu_r=meu/meu_o #Relative Permeability\n",
+ "\n",
+ "#Result\n",
+ "print(\"Flux Density in weber/meter^2 :%.2f \"%B)\n",
+ "print(\"\\nmagnetic Intensity in amp-turn/meter : %.0f\"%H)\n",
+ "print(\"\\nPermeability in weber/amp-meter :%.2f *10^-4\"%(meu*10**4))\n",
+ "print(\"\\nRelative Permeability :%.3f \"%meu_r)\n",
+ "#Answer of relative permeability is wrong in the book."
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Flux Density in weber/meter^2 :0.02 \n",
+ "\n",
+ "magnetic Intensity in amp-turn/meter : 32\n",
+ "\n",
+ "Permeability in weber/amp-meter :6.25 *10^-4\n",
+ "\n",
+ "Relative Permeability :497.359 \n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "example 7.5, Page No.253"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Relative Permeability\n",
+ "import math\n",
+ "#variable declaration\n",
+ "Xci_m=9.48*10**-9 #usceptibility of medium(unitless)\n",
+ "\n",
+ "#calculation\n",
+ "meu_r=1+Xci_m #relative permeability(unitless)\n",
+ "\n",
+ "#result\n",
+ "print(\"Relative Permeability : %.2f * 10^-9\\n\"%(meu_r*10**9));\n",
+ "print(\"i.e, Relative Permeability is sligtly greater than 1.\");"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Relative Permeability : 1000000009.48 * 10^-9\n",
+ "\n",
+ "i.e, Relative Permeability is sligtly greater than 1.\n"
+ ]
+ }
+ ],
+ "prompt_number": 18
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "example 7.6, page No.253"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Magnetising Force and material magnetisation\n",
+ "import math\n",
+ "\n",
+ "#variable declarationm\n",
+ "n=10 #turns/cm\n",
+ "n=n*10**2 #turns/meter\n",
+ "i=2 #in Ampere\n",
+ "B=1 #in weber/meter^2\n",
+ "meu_o=4*math.pi*10**-7 #permeability of free space in weber/amp-meter\n",
+ "\n",
+ "#Calculations\n",
+ "H=n*i #in amp-turn/meter\n",
+ "#Formula : B=meu_o*(H+I)\n",
+ "I=B/meu_o-H #in amp-turn/meter\n",
+ "meu_r=B/(meu_o*H) #relative permeability(unitless)\n",
+ "\n",
+ "#result\n",
+ "print(\"Magnetising Force in amp-turn/meter :%.0f \"%H)\n",
+ "print(\"\\nMagn etisation of material in amp-turn/meter %.2f * 10^5:\"%(math.ceil(I/10**3)/100))\n",
+ "print(\"\\nRelative Permeability : %.0f\"%(math.floor(meu_r)))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Magnetising Force in amp-turn/meter :2000 \n",
+ "\n",
+ "Magn etisation of material in amp-turn/meter 7.94 * 10^5:\n",
+ "\n",
+ "Relative Permeability : 397\n"
+ ]
+ }
+ ],
+ "prompt_number": 27
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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