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+{
+ "metadata": {
+  "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 1: Introduction"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "Example 1.1, Page Number: 6"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from __future__ import division\n",
+      "\n",
+      "\n",
+      "#Variable declaration:\n",
+      "Pi = 4200                            #input power(W)\n",
+      "E = 120                              #voltage supply of generator(V)\n",
+      "I = 32.2                             #supply current(A)\n",
+      "\n",
+      "\n",
+      "#Calculation:\n",
+      "Po = E*I                          #output power(W)\n",
+      "n = Po/Pi*100                         #efficiency(%)\n",
+      "Pl = Pi-Po                         #power lost(W)\n",
+      "El = Pl*60                         #energy lost per minute(J)\n",
+      "\n",
+      "\n",
+      "#Result:\n",
+      "print \"The percentage efficiency of the generator is\",n,\"%\"\n",
+      "print \"Energy lost per minute of operation is\",El,\"J\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The percentage efficiency of the generator is 92.0 %\n",
+        "Energy lost per minute of operation is 20160.0 J\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file