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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:ce9c4ba63f9ce316e76597a7788141e75bacb70902db486d65612d29b6d08c96"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 11 - Instrument Calibration"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 11.3.1 - page11-7"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# percentage of the reading and percentage of full scale\n",
+      "#Given data :\n",
+      "a=10 #scale reading\n",
+      "b=70 # full scale\n",
+      "error1=-(0.5/10)*100  # in %\n",
+      "print \"step 1\"\n",
+      "print \"error of reading \", error1, \" %\"\n",
+      "error2=-(0.5/100)*100 # in %\n",
+      "print \"error of full scale is \", error2, \" %\"\n",
+      "print \"step 2\"\n",
+      "error3=(2.5/70)*100 # in %\n",
+      "print \"error of reading is \", round(error3,2), \" %\"\n",
+      "error4=(2.5/100)*100 # in %\n",
+      "print \"error of full scale is\", error4, \" %\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "step 1\n",
+        "error of reading  -5.0  %\n",
+        "error of full scale is  -0.5  %\n",
+        "step 2\n",
+        "error of reading is  3.57  %\n",
+        "error of full scale is 2.5  %\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 11.3.2 - page11-9"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " # wattmeter error and correction figure\n",
+      "#Given data :\n",
+      "P1=120.0 # in W\n",
+      "V=114.0 #in volts\n",
+      "I=1 #in A\n",
+      "P=V*I \n",
+      "error1=P-P1 # in W\n",
+      "print \"correction figure is \", error1, \" W\"\n",
+      "error2=(error1/P1)*100  # in %\n",
+      "print \"wattmeter error is \",error2,\" %\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "correction figure is  -6.0  W\n",
+        "wattmeter error is  -5.0  %\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file