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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