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{
"metadata": {
"name": "",
"signature": "sha256:7b602763fd5a9c056abb62703a3bc42ae0cb4a39b3c349f78c056ebe58b1c643"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_1"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Precision of the 5th measurement\n",
"#Given data : Measurements taken(Unit less)\n",
"X1=98;\n",
"X2=101;\n",
"X3=102;\n",
"X4=97;\n",
"X5=101;\n",
"X6=100;\n",
"X7=103;\n",
"X8=98;\n",
"X9=106;\n",
"X10=99.0;\n",
"#Calculation\n",
"Xn_bar=(X1+X2+X3+X4+X5+X6+X7+X8+X9+X10)/10;\n",
"Xn=101 # value of 5th measurement\n",
"P=(1-abs((Xn-Xn_bar)/Xn_bar))*100 #Precision\n",
"print \"Precision of the 5th measurement,P(%) = \",round(P,3)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Precision of the 5th measurement,P(%) = 99.502\n"
]
}
],
"prompt_number": 13
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_2_a"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Absolute error\n",
"#given data :\n",
"Ae=80.0 # in V\n",
"Am=79 # in V\n",
"e=Ae-Am #absolute error\n",
"print \"Absolute error,e(V) = \",e"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Absolute error,e(V) = 1.0\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_2_b"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Finding error\n",
"#given data :\n",
"Ae=80.0 # in V\n",
"Am=79 # in V\n",
"e=Ae-Am #error\n",
"ep=(e/Ae)*100 #relative percent error\n",
"print \"Relative Percent Error(%) = \",ep"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Relative Percent Error(%) = 1.25\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_3"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# maximum error\n",
"#given data :\n",
"V1=100 # in volts\n",
"V2=200 # in volts\n",
"V=V2-V1 # Voltage difference\n",
"A=.25 # Accuracy may be \u00b1 in %\n",
"max_error=(A/100)*V # in Volts\n",
"print \"maximum error(V) = \u00b1\",max_error"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"maximum error(V) = \u00b1 0.25\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_4"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#sensitivity and deflection error\n",
"# given data :\n",
"C=4.0 # change in output in mm\n",
"M=8.0 # magnitude of input in ohm\n",
"S=C/M # sensitivity\n",
"print \"sensitivity,S(mm/ohm) = \",S\n",
"D=M/C # Deflection\n",
"print \"Deflection factor,D(ohm/m) = \",D"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"sensitivity,S(mm/ohm) = 0.5\n",
"Deflection factor,D(ohm/m) = 2.0\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_5 "
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Resolution\n",
"# given data :\n",
"V=200.0 # full scale reading in volts\n",
"N=100.0 # number of divisions \n",
"Scale_div=V/N # Volts\n",
"R=(1/10.0)*Scale_div # Resolution in Volts\n",
"print \"Resolution, R(V) = \",round(R,4)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Resolution, R(V) = 0.2\n"
]
}
],
"prompt_number": 18
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example 2_3_6"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Resolution\n",
"#given data :\n",
"V=9.999 # full scale read out in volt\n",
"c=range(0,9999) # range from 0 to 9999\n",
"R=(1/max(c))*V*10.0**3\n",
"print \"Resolution, R(mV)\", R"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Resolution, R(mV) 0.0\n"
]
}
],
"prompt_number": 29
}
],
"metadata": {}
}
]
}
|
