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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"#Chapter 14 , Electronics Instruments"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"##Example 14.1 , Page Number 516"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Value of shunt resistance required for the instrument : 0.0500025 ohm.\n"
]
}
],
"source": [
"#Variables\n",
"\n",
"Im = 50.0 * 10**-6 #Full scale deflection current (in Ampere) \n",
"Rm = 1.0 * 10**3 #Instrument resistance (in ohm)\n",
"I = 1.0 #Total current to be measured (in Ampere)\n",
"\n",
"#Calculation\n",
"\n",
"RS = Rm/(1/Im - 1) #Resistance of ammeter shunt required (in ohm)\n",
"\n",
"#Result\n",
"\n",
"print \"Value of shunt resistance required for the instrument : \",round(RS,7),\"ohm.\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"##Example 14.2 , Page Number 518"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Required series resistance 99900.0 ohm.\n"
]
}
],
"source": [
"#Variables\n",
"\n",
"Im = 1.0 * 10**-3 #Full scale deflection current (in Ampere) \n",
"Rm = 1.0 * 10**2 #Instrument resistance (in ohm)\n",
"V = 100.0 #Voltage to be measured (in volts)\n",
"\n",
"#Calculation\n",
"\n",
"R = V/Im - Rm #Required series resistance (in ohm) \n",
"\n",
"#Result\n",
"\n",
"print \"Required series resistance \",R,\"ohm.\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"##Example 14.3 , Page Number 528"
]
},
{
"cell_type": "code",
"execution_count": 8,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Resolution for full scale of range 1 V : 0.001 V.\n",
"Resolution for full scale of range 10 V : 0.01 V.\n",
"Total possible error : 0.015 V.\n"
]
}
],
"source": [
"#Variables\n",
"\n",
"num = 3.0 #Number of full digits on display\n",
"\n",
"#Calculation\n",
"\n",
"R = 1/10**num #Resolution\n",
"V1 = 1 * R #Resolution for full scale of range 1 V (in volts) \n",
"V10 = 10 * R #Resolution for full scale of range 10 V (in volts)\n",
"dig = 5.0 * 1/10**3 #Least significant digit\n",
"toterror = 0.5/100 * 2 + dig #total possible error (in volts)\n",
"\n",
"#Result\n",
"\n",
"print \"Resolution for full scale of range 1 V :\",V1,\"V.\"\n",
"print \"Resolution for full scale of range 10 V : \",V10,\"V.\"\n",
"print \"Total possible error : \",round(toterror,3),\"V.\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"##Example 14.4 , Page Number 528"
]
},
{
"cell_type": "code",
"execution_count": 9,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Resolution of 1 V range is 0.0001 V.\n",
"Any reading upto 4th decimal can be displayed.\n",
"Hence 0.5243 will be displayed as 0.5243.\n",
"Resolution of 10 V range is 0.001 V.\n",
"Any reading upto 3rd decimal can be displayed.\n",
"Hence 0.5243 will be displayed as 0.524 instead of 0.5243.\n"
]
}
],
"source": [
"#Variables\n",
"\n",
"num = 4.0 #Number of full digits on display\n",
"\n",
"#Calculation\n",
"\n",
"R = 1/10**num #Resolution\n",
"V1 = 1 * R #Resolution for full scale of range 1 V (in volts) \n",
"V10 = 10 * R #Resolution for full scale of range 10 V (in volts)\n",
"\n",
"#Result\n",
"\n",
"print \"Resolution of 1 V range is \",V1,\"V.\\nAny reading upto 4th decimal can be displayed.\\nHence 0.5243 will be displayed as 0.5243.\"\n",
"print \"Resolution of 10 V range is \",V10,\"V.\\nAny reading upto 3rd decimal can be displayed.\\nHence 0.5243 will be displayed as 0.524 instead of 0.5243.\""
]
}
],
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"file_extension": ".py",
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"nbconvert_exporter": "python",
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"version": "2.7.10"
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"nbformat": 4,
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|
