Added(A)/Deleted(D) following books

 A  Electronics_Engineering_by_P._Raja/chapter_1_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_2_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_3_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_4_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_5_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_6_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_7_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_8_2.ipynb
A  Electronics_Engineering_by_P._Raja/chapter_9_2.ipynb
A  Electronics_Engineering_by_P._Raja/screenshots/7_2.png
A  Electronics_Engineering_by_P._Raja/screenshots/snap-3_2.png
A  Electronics_Engineering_by_P._Raja/screenshots/snap-6_2.png
A  Machine_Design_by_U.C._Jindal/Ch10.ipynb
A  Machine_Design_by_U.C._Jindal/Ch11.ipynb
A  Machine_Design_by_U.C._Jindal/Ch12.ipynb
A  Machine_Design_by_U.C._Jindal/Ch13.ipynb
A  Machine_Design_by_U.C._Jindal/Ch14.ipynb
A  Machine_Design_by_U.C._Jindal/Ch15.ipynb
A  Machine_Design_by_U.C._Jindal/Ch16.ipynb
A  Machine_Design_by_U.C._Jindal/Ch17.ipynb
A  Machine_Design_by_U.C._Jindal/Ch18.ipynb
A  Machine_Design_by_U.C._Jindal/Ch19.ipynb
A  Machine_Design_by_U.C._Jindal/Ch20.ipynb
A  Machine_Design_by_U.C._Jindal/Ch21.ipynb
A  Machine_Design_by_U.C._Jindal/Ch22.ipynb
A  Machine_Design_by_U.C._Jindal/Ch23.ipynb
A  Machine_Design_by_U.C._Jindal/Ch24.ipynb
A  Machine_Design_by_U.C._Jindal/Ch25.ipynb
A  Machine_Design_by_U.C._Jindal/Ch26.ipynb
A  Machine_Design_by_U.C._Jindal/Ch27.ipynb
A  Machine_Design_by_U.C._Jindal/Ch28.ipynb
A  Machine_Design_by_U.C._Jindal/Ch29.ipynb
A  Machine_Design_by_U.C._Jindal/Ch3.ipynb
A  Machine_Design_by_U.C._Jindal/Ch30.ipynb
A  Machine_Design_by_U.C._Jindal/Ch31.ipynb
A  Machine_Design_by_U.C._Jindal/Ch4.ipynb
A  Machine_Design_by_U.C._Jindal/Ch5.ipynb
A  Machine_Design_by_U.C._Jindal/Ch6.ipynb
A  Machine_Design_by_U.C._Jindal/Ch7.ipynb
A  Machine_Design_by_U.C._Jindal/Ch8.ipynb
A  Machine_Design_by_U.C._Jindal/Ch9.ipynb
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter-3stressgraph.png
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter-_8AdditionalLoad.png
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter11_-_strengthofrevet.png
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter02_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter03_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter04_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter05_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter06_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter07_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter08_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter09_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter10_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/Chapter11_2.ipynb
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/screenshots/Screenshot_3.1.py.PNG
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/screenshots/Screenshot_6.1.py.PNG
A  Solid_State_Devices_and_Circuits___by_V._Chaudhary_and_H._K._Maity/screenshots/Screenshot_6.2.py.PNG
A  sample_notebooks/PriyankaSaini/Chapter3.ipynb
A  sample_notebooks/ebbygeorge/Chapter01.ipynb

1 files changed, 458 insertions, 0 deletions

diff --git a/Machine_Design_by_U.C._Jindal/Ch18.ipynb b/Machine_Design_by_U.C._Jindal/Ch18.ipynb
new file mode 100644
index 00000000..517ede07
--- /dev/null
+++ b/Machine_Design_by_U.C._Jindal/Ch18.ipynb
@@ -0,0 +1,458 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:055c3393195abf0a8ef572fedb25f45ff1f7afe240916a9a2958b3762222b625"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Ch:18 Rolling bearings"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-1 - Page 507"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from __future__ import division\n",
+      "from math import sqrt, pi\n",
+      "Pr=16*10**3#\n",
+      "u=0.0011#\n",
+      "F=u*Pr#\n",
+      "r=20*10**-3#\n",
+      "#Let frictional moment be M\n",
+      "M=F*r#\n",
+      "N=1440#\n",
+      "w=2*pi*N/60#\n",
+      "Pf=M*w#\n",
+      "print \"Pf is %0.2f W    \"%(Pf)#"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Pf is 53.08 W    \n"
+       ]
+      }
+     ],
+     "prompt_number": 11
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-2 - Page 508"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "C=5590#\n",
+      "Ca=2500#\n",
+      "Pa=625#\n",
+      "Pr=1250#\n",
+      "V=1#\n",
+      "X=0.56#\n",
+      "Y=1.2#\n",
+      "P1=(X*V*Pr)+(Y*Pa)#\n",
+      "L1=(C/P1)**3#\n",
+      "V=1.2#\n",
+      "P2=(X*V*Pr)+(Y*Pa)#\n",
+      "L2=(C/P2)**3#\n",
+      "print \"L1 is %0.1f million revolutions    \"%(L1)#\n",
+      "print \"\\nL2 is %0.2f million revoltions    \"%(L2)#"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "L1 is 57.3 million revolutions    \n",
+        "\n",
+        "L2 is 43.46 million revoltions    \n"
+       ]
+      }
+     ],
+     "prompt_number": 12
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-4 - Page 509"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "P=20*10**3#\n",
+      "Co=22400#\n",
+      "C=41000#\n",
+      "Ln=(C/P)**3#\n",
+      "Lh=Ln*10**6/(720*60)#\n",
+      "print \"Lh is %0.3f hrs    \"%(Lh)#"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Lh is 199.424 hrs    \n"
+       ]
+      }
+     ],
+     "prompt_number": 13
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-5 - Page 510"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "R1x=120#\n",
+      "R1y=250#\n",
+      "R2x=300#\n",
+      "R2y=400#\n",
+      "Lh=8000#\n",
+      "N=720#\n",
+      "Ln=Lh*60*N*10**-6#\n",
+      "R1=sqrt(R1x**2+R1y**2)#\n",
+      "R2=sqrt(R2x**2+R2y**2)#\n",
+      "#Let load factor be Ks\n",
+      "Ks=1.5#\n",
+      "P1=R1*Ks#\n",
+      "P2=R2*Ks#\n",
+      "C1=P1*(Ln**(1/3))#\n",
+      "C2=P2*(Ln**(1/3))#\n",
+      "#let designation,d,D,B,C at bearing B1 be De1,d1,D1,B1,C1\n",
+      "d1=25#\n",
+      "D1=37#\n",
+      "B1=7#\n",
+      "C1=3120#\n",
+      "De1=61805#\n",
+      "#let designation,d,D,B,C at bearing B2 be De2,d2,D2,B2,C2\n",
+      "d2=25#\n",
+      "D2=47#\n",
+      "B2=8#\n",
+      "C2=7620#\n",
+      "De2=16005#\n",
+      "print \"Designation of Bearing B1 is %0.0f     \"%(De1)#\n",
+      "print \"\\nd1 is %0.0f mm    \"%(d1)#\n",
+      "print \"\\nD1 is %0.0f mm    \"%(D1)#\n",
+      "print \"\\nB1 is %0.0f mm    \"%(B1)#\n",
+      "print \"\\nC1 is %0.0f N    \"%(C1)#\n",
+      "print \"\\nDesignation of Bearing B2 is %0.0f     \"%(De2)#\n",
+      "print \"\\nd2 is %0.0f mm    \"%(d2)#\n",
+      "print \"\\nD2 is %0.0f mm    \"%(D2)#\n",
+      "print \"\\nB2 is %0.0f mm    \"%(B2)#\n",
+      "print \"\\nC2 is %0.0f N    \"%(C2)#\n",
+      "print 'Bearing 61805 at B1 and 16005 at B2 can be installed.'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Designation of Bearing B1 is 61805     \n",
+        "\n",
+        "d1 is 25 mm    \n",
+        "\n",
+        "D1 is 37 mm    \n",
+        "\n",
+        "B1 is 7 mm    \n",
+        "\n",
+        "C1 is 3120 N    \n",
+        "\n",
+        "Designation of Bearing B2 is 16005     \n",
+        "\n",
+        "d2 is 25 mm    \n",
+        "\n",
+        "D2 is 47 mm    \n",
+        "\n",
+        "B2 is 8 mm    \n",
+        "\n",
+        "C2 is 7620 N    \n",
+        "Bearing 61805 at B1 and 16005 at B2 can be installed.\n"
+       ]
+      }
+     ],
+     "prompt_number": 14
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-6 - Page 511"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from math import tan\n",
+      "P=7500#\n",
+      "N=1440#\n",
+      "w=2*pi*N/60#\n",
+      "T=P/w#\n",
+      "r=0.2#\n",
+      "#Let T1-T2=t\n",
+      "t=T/r#\n",
+      "T2=t/2.5#\n",
+      "T1=3.5*T2#\n",
+      "R=0.125#\n",
+      "Ft=T/R#\n",
+      "Fr=Ft*tan(20*pi/180)#\n",
+      "# RD & RA are reaction forces calculated in vertical and horizontal directions from FBD by force equilibrium\n",
+      "RDv=186.5#\n",
+      "RAv=236.2#\n",
+      "RDh=36.2#\n",
+      "RAh=108.56#\n",
+      "RA=sqrt(RAv**2+RAh**2)#\n",
+      "RD=sqrt(RDv**2+RDh**2)#\n",
+      "Ks=1.4#\n",
+      "P1=RA*Ks#\n",
+      "P2=RD*Ks#\n",
+      "#let designation,d,D,B,C at bearing B1 be De1,d1,C1\n",
+      "d1=25#\n",
+      "C1=3120#\n",
+      "De1=61805#\n",
+      "#let designation,d,D,B,C at bearing B2 be De2,d2,C2\n",
+      "d2=25#\n",
+      "\n",
+      "C2=2700#\n",
+      "De2=61804#\n",
+      "L1=(C1/P1)**3#\n",
+      "Lh1=L1*10**6/(720*60)#\n",
+      "L2=(C2/P2)**3#\n",
+      "Lh2=L2*10**6/(720*60)#\n",
+      "print \"Lh1 is %0.0f hrs    \"%(Lh1)#\n",
+      "print \"\\nLh2 is %0.0f hrs    \"%(Lh2)#\n",
+      "#Incorrect value of P2 is taken in the book while calculating L2."
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Lh1 is 14585 hrs    \n",
+        "\n",
+        "Lh2 is 24216 hrs    \n"
+       ]
+      }
+     ],
+     "prompt_number": 15
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      " exa 18-7 - Page 511"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from math import log\n",
+      "P=3500#\n",
+      "Lh=6000#\n",
+      "N=1400#\n",
+      "R98=0.98#\n",
+      "R90=0.9#\n",
+      "L98=Lh*60*N/10**6#\n",
+      "x=(log(1/R98)/log(1/R90))**(1/1.17)#\n",
+      "L90=L98/x#\n",
+      "C=P*L90**(1/3)#\n",
+      "print \"C is %0.0f N    \"%(C)#\n",
+      "#The difference in the value of C is due to rounding-off of value of L."
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C is 44589 N    \n"
+       ]
+      }
+     ],
+     "prompt_number": 16
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-8 - Page 512"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "n=3#\n",
+      "P=3#\n",
+      "#Let Reliability of system be R\n",
+      "R=0.83#\n",
+      "L94=6#\n",
+      "R94=(R)**(1/n)#\n",
+      "x=(log(1/R94)/log(1/0.90))**(1/1.17)#\n",
+      "L90=L94/x#\n",
+      "C=P*L90**(1/3)#\n",
+      "print \"C is %0.3f kN    \"%(C)#\n",
+      "#The difference in the value of C is due to rounding-off of value of L."
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C is 6.337 kN    \n"
+       ]
+      }
+     ],
+     "prompt_number": 17
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-9 - Page 512"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "P1=3000#\n",
+      "P2=4000#\n",
+      "P3=5000#\n",
+      "N1=1440#\n",
+      "N2=1080#\n",
+      "N3=720#\n",
+      "t1=1/4#\n",
+      "t2=1/2#\n",
+      "t3=1/4#\n",
+      "n1=N1*t1#\n",
+      "n2=N2*t2#\n",
+      "n3=N3*t3#\n",
+      "N=(n1+n2+n3)#\n",
+      "Pe=(((n1*P1**3)+(n2*P2**3)+(n3*P3**3))/N)**(1/3)#\n",
+      "Lh=10*10**3#\n",
+      "L=Lh*60*N/10**6#\n",
+      "C=Pe*L**(1/3)#\n",
+      "print \"C is %0.0f N    \"%(C)#\n",
+      "#The difference in the value of C is due to rounding-off of value of Pe"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "C is 34219 N    \n"
+       ]
+      }
+     ],
+     "prompt_number": 18
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "exa 18-10 - Page 513"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "Co=695#\n",
+      "C=1430#\n",
+      "Pa1=200#\n",
+      "Pr1=600#\n",
+      "x=Pa1/Co#\n",
+      "y=Pa1/Pr1#\n",
+      "e=0.37+((0.44-0.37)*0.038/0.28)#\n",
+      "X=1#\n",
+      "Y=0#\n",
+      "P1=600#\n",
+      "Pa2=120#\n",
+      "Pr2=300#\n",
+      "X=0.56#\n",
+      "Y=1.2-(0.2*0.042/0.12)#\n",
+      "P2=(X*Pr2)+(Y*Pa2)#\n",
+      "N1=1440#\n",
+      "N2=720#\n",
+      "t1=2/3#\n",
+      "t2=1/3#\n",
+      "n1=N1*t1#\n",
+      "n2=N2*t2#\n",
+      "N=(n1+n2)#\n",
+      "Pe=(((n1*P1**3)+(n2*P2**3))/N)**(1/3)#\n",
+      "L=(C/Pe)**3#\n",
+      "Lh=L*10**6/(N*60)#\n",
+      "print \"Lh is %0.2f hrs    \"%(Lh)#\n",
+      "#The difference in the value of Lh is due to rounding-off of value of Pe"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Lh is 227.66 hrs    \n"
+       ]
+      }
+     ],
+     "prompt_number": 19
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file