Added(A)/Deleted(D) following books

 A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter1.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter2.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter3.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter4.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter5.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter6.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter7.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter8.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/screenshots/DCLOADLINEchapter4.png
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/screenshots/DCLOADLineCH4.png
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/screenshots/TransferCharofnchmosfetCH8.png
A  Engineering_Mechanics_by_A._K._Tayal/Chapter10.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter12.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter13.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter14.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter15.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter16.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter17.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter18.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter19.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter2.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter20.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter21.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter22.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter23.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter24.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter25.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter26.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter3.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter4.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter5.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter6.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter7.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter8.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter9.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/screenshots/1.png
A  Engineering_Mechanics_by_A._K._Tayal/screenshots/2.png
A  Engineering_Mechanics_by_A._K._Tayal/screenshots/3.png
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch10.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch11.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch12.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch14.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch16.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch2.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch3.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch4.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch5.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch6.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch7.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch8.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch9.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/screenshots/ACloadLineChapter10.png
A  Semiconductor_circuit_approximations_by_A.P._Malvino/screenshots/DCandACloadlinechapter9.png
A  Semiconductor_circuit_approximations_by_A.P._Malvino/screenshots/Powerratingchapter9.png

1 files changed, 133 insertions, 0 deletions

diff --git a/Engineering_Mechanics_by_A._K._Tayal/Chapter4.ipynb b/Engineering_Mechanics_by_A._K._Tayal/Chapter4.ipynb
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+++ b/Engineering_Mechanics_by_A._K._Tayal/Chapter4.ipynb
@@ -0,0 +1,133 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 4 Centroid Centre of mass and Centre of Gravity"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 4.8 Centroid of a composite plane figure"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The centroid of the un equal I-section is 10.961538 cm \n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variables\n",
+    "b1=20 #cm # width of top flange\n",
+    "t1=5 #cm # thickness of top flange\n",
+    "b2=5 #cm # width of web\n",
+    "t2=15 #cm # thickness or height of the web\n",
+    "b3=30 #cm # width of bottom flange\n",
+    "t3=5 #cm # thickness of bottom flange\n",
+    "# Calculations\n",
+    "A1=b1*t1 #cm**2 # area of bottom flange\n",
+    "A2=b2*t2 #cm**2 # area of the web\n",
+    "A3=b3*t3 #cm**2 # area of top flange\n",
+    "y1=t3+t2+(t1/2) #cm # y co-ordinate of the centroid of top flange\n",
+    "y2=t3+(t2/2) #cm #  y co-ordinate of the centroid of the web\n",
+    "y3=t3/2 #cm #  y co-ordinate of the centroid of the bottom flange\n",
+    "y_c=((A1*y1)+(A2*y2)+(A3*y3))/(A1+A2+A3) #cm # where y_c is the centroid of the un-symmetrical I-section\n",
+    "# Results\n",
+    "print('The centroid of the un equal I-section is %f cm \\n'%y_c)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 4.9 Centroid of a composite plane figure"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The centroid of the cross-sectional area of a Z-section about x-axis is 13.557692 cm \n",
+      "\n",
+      "The centroid of the cross-sectional area of a Z-section about y-axis is 7.692308 cm \n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variables\n",
+    "# The given section is Z-section which is un-symmetrycal about both the axis\n",
+    "b1=20 #cm # width of bottom flange \n",
+    "t1=5 #cm # thickness of the bottom flange\n",
+    "b2=2.5 #cm # thickness of the web of the flange\n",
+    "t2=15 #cm # depth of the web\n",
+    "b3=10 #cm # width of the top flange\n",
+    "t3=2.5 #cm # thickness of the top flange\n",
+    "# Calculations\n",
+    "# Respective areas\n",
+    "A1=b1*t1 # cm**2 # area of the bottom flange\n",
+    "A2=b2*t2 # cm**2 # area of the web\n",
+    "A3=b3*t3 # cm**2 # area of the top-flange\n",
+    "# first we calculate the x co-ordinate of the centroid\n",
+    "x1=b3-b2+(b1/2) #cm # for the bottom flange\n",
+    "x2=b3-(b2/2) #cm # for the web\n",
+    "x3=b3/2 #cm # for the top flange\n",
+    "x_c=((A1*x1)+(A2*x2)+(A3*x3))/(A1+A2+A3) #cm\n",
+    "# secondly we calculate the y co-ordinate of the centroid\n",
+    "y1=t1/2 #cm # for the bottom flange\n",
+    "y2=t1+(t2/2) #cm # for the web\n",
+    "y3=t1+t2+(t3/2) #cm # for the top flange\n",
+    "y_c=((A1*y1)+(A2*y2)+(A3*y3))/(A1+A2+A3) # cm\n",
+    "# Results\n",
+    "print('The centroid of the cross-sectional area of a Z-section about x-axis is %f cm \\n'%x_c)\n",
+    "print('The centroid of the cross-sectional area of a Z-section about y-axis is %f cm \\n'%y_c)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.5.1"
+  },
+  "widgets": {
+   "state": {},
+   "version": "1.1.2"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}