Added(A)/Deleted(D) following books

 R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch3.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch3.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch3_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch3_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch4.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch4.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch4_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch4_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch5.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch5.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch5_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch5_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch6.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch6.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch6_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch6_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch7.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch7.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch7_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch7_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch8.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch8.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch8_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch8_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch9.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch9.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch9_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch9_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/3.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/3.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/3_1.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/3_1.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/5.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/5.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/5_1.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/5_1.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/9.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/9.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/9_1.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/9_1.png
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch15_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch16_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch17_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch18_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch19_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch20_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch21_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch22_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch23_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch24_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch25_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch26_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch27_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch28_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch29_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch30_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/screenshots/1RefractionOfLaserLight_2.png
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/screenshots/2PropertiesOfImage_2.png
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/screenshots/3PositionOf1DarkFringe_2.png
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch10_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch11_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch12_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch13_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch1_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch2_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch3_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch4_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch5_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch6_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch7_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch8_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch9_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/screenshots/opNip3_2.png
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/screenshots/opNipV3_2.png
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/screenshots/transferChar3_2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter10_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter10_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter11_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter11_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter13_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter13_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter3_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter3_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter4_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter4_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter5_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter5_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter6_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter6_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter7_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter7_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter8_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter8_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter9_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter9_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13AngularDisplacement_1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13AngularDisplacement_2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LateralDisplacement_1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LateralDisplacement_2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LongitudinalDisplacement_1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LongitudinalDisplacement_2.png
A  Machine_Design_by_U.C._Jindal/Ch10_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch11_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch12_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch13_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch14_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch15_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch16_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch17_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch18_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch19_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch20_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch21_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch22_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch23_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch24_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch25_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch26_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch27_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch28_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch29_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch30_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch31_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch3_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch4_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch5_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch6_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch7_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch8_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch9_2.ipynb
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter-3stressgraph_2.png
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter-_8AdditionalLoad_2.png
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter11_-_strengthofrevet_2.png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/README.txt -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/README.txt
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56).png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56).png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56)_1.png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56)_1.png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57).png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57).png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57)_1.png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57)_1.png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58).png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58).png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58)_1.png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58)_1.png
D  df_by_f/muktesh.ipynb
D  df_by_f/padmavathi.ipynb
D  df_by_f/prashanth.ipynb
D  df_by_f/screenshots/blank1.png
D  df_by_f/screenshots/blank1_(another_copy).png
D  df_by_f/screenshots/blank1_(copy).png
D  df_by_f/screenshots/blank1_(copy)_1.png
D  df_by_f/screenshots/blank1_1.png
D  df_by_f/screenshots/blank1_2.png
D  dss_by_asd/README.txt
D  dss_by_asd/namratha.ipynb
D  dss_by_asd/screenshots/screenshot2.png
D  dss_by_asd/screenshots/screenshot4.png
D  dss_by_asd/screenshots/streamplot.png
D  fdgfg_by_fgs/arijit.ipynb
D  fdgfg_by_fgs/screenshots/48007040.png
D  fdgfg_by_fgs/screenshots/acrofi_india.png
D  fdgfg_by_fgs/screenshots/acrofi_india_1.png
D  testing_by_test/screenshots/screenshot6.png
D  testing_by_test/screenshots/screenshot6_1.png
D  testing_by_test/screenshots/screenshot6_2.png
D  testing_by_test/screenshots/screenshot6_3.png
D  testing_by_test/screenshots/screenshot6_4.png
D  testing_by_test/screenshots/screenshot6_5.png
D  testing_by_test/vivek.ipynb
D  testing_by_test/vivek_1.ipynb

1 files changed, 445 insertions, 0 deletions

diff --git a/Machine_Design_by_U.C._Jindal/Ch16_2.ipynb b/Machine_Design_by_U.C._Jindal/Ch16_2.ipynb
new file mode 100644
index 00000000..bc87342d
--- /dev/null
+++ b/Machine_Design_by_U.C._Jindal/Ch16_2.ipynb
@@ -0,0 +1,445 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Ch:16 Power screws"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-1 - Page 450"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Ttr is 110.148 Nm     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import atan, pi, sqrt, tan\n",
+    "d=30#\n",
+    "W=20*10**3#\n",
+    "r1=8#\n",
+    "r2=16#\n",
+    "p=6#\n",
+    "u1=0.2#\n",
+    "u2=0.15#\n",
+    "dm=d-(p/2)#\n",
+    "alpha=atan(p/(pi*dm))#\n",
+    "phi=atan(u1)#\n",
+    "rm=(r1+r2)/2#\n",
+    "Ttr=W*((dm*tan(alpha+phi)/2)+(u2*rm))#\n",
+    "Ttr=Ttr*10**-3#\n",
+    "print \"Ttr is %0.3f Nm     \"%(Ttr)#\n",
+    "#The answer to Ttr is slightly different than in the book due to rounding-off of values."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-2 - Page 451"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " Tr is 187.49 Nm     \n",
+      "\n",
+      " Te is 51.691 Nm     \n",
+      "\n",
+      " n is 0.3489      \n",
+      "\n",
+      " Ph is 624.96 N     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import cos,pi,atan,tan\n",
+    "d=50#\n",
+    "W=20*10**3#\n",
+    "r1=10#\n",
+    "r2=30#\n",
+    "p=7#\n",
+    "u1=0.12/cos(15*pi/180)#\n",
+    "u2=0.15#\n",
+    "dm=d-(p/2)#\n",
+    "alpha=atan(3*p/(pi*dm))#\n",
+    "phi=atan(u1)#\n",
+    "rm=(r1+r2)/2#\n",
+    "Tr=W*((dm*tan(alpha+phi)/2)+(u2*rm))#\n",
+    "Tr=Tr*10**-3#\n",
+    "Te=W*((dm*tan(phi-alpha)/2)+(u2*rm))#\n",
+    "Te=Te*10**-3#\n",
+    "n=dm/2*tan(alpha)/(dm*tan(alpha+phi)/2+(u2*rm))#\n",
+    "L=0.30#\n",
+    "Ph=Tr/L#\n",
+    "print \" Tr is %0.2f Nm     \"%(Tr)#\n",
+    "print \"\\n Te is %0.3f Nm     \"%(Te)#\n",
+    "print \"\\n n is %0.4f      \"%(n)#\n",
+    "print \"\\n Ph is %0.2f N     \"%(Ph)#\n",
+    "#The answers to Tr, Te and Ph is slightly different than in the book due to rounding-off of values."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-3 - Page 452"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " Tr1 is 31.456 Nm     \n",
+      "\n",
+      " n1 is 0.1265      \n",
+      "\n",
+      " T1 is 23.307 Nm     \n",
+      "\n",
+      " n2 is 0.1707      \n",
+      "\n",
+      " Tr2 is 17.156 Nm     \n",
+      "\n",
+      " n3 is 0.2319      \n",
+      "\n",
+      " Te is 9.007 Nm     \n",
+      "\n",
+      " n4 is 0.4418      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt, pi, atan,tan\n",
+    "d=30#\n",
+    "W=5*10**3#\n",
+    "p=5#\n",
+    "rm=45/2#\n",
+    "u1=0.15/cos(14.5*pi/180)#\n",
+    "u2=0.15#\n",
+    "dm=d-(p/2)#\n",
+    "alpha=atan(p/(pi*dm))#\n",
+    "phi=atan(u1)#\n",
+    "Tr1=W*((dm*tan(alpha+phi)/2)+(u2*rm))#\n",
+    "Tr1=Tr1*10**-3#\n",
+    "n1=dm/2*tan(alpha)/(dm*tan(alpha+phi)/2+(u2*rm))#\n",
+    "T1=W*((dm*tan(phi-alpha)/2)+(u2*rm))#\n",
+    "T1=T1*10**-3#\n",
+    "n2=dm/2*tan(alpha)/(dm*tan(phi-alpha)/2+(u2*rm))#\n",
+    "u2=0.02#\n",
+    "Tr2=W*((dm*tan(alpha+phi)/2)+(u2*rm))#\n",
+    "Tr2=Tr2*10**-3#\n",
+    "n3=dm/2*tan(alpha)/(dm*tan(alpha+phi)/2+(u2*rm))#\n",
+    "Te=W*((dm*tan(phi-alpha)/2)+(u2*rm))#\n",
+    "Te=Te*10**-3#\n",
+    "n4=dm/2*tan(alpha)/(dm*tan(phi-alpha)/2+(u2*rm))#\n",
+    "print \" Tr1 is %0.3f Nm     \"%(Tr1)#\n",
+    "print \"\\n n1 is %0.4f      \"%(n1)#\n",
+    "print \"\\n T1 is %0.3f Nm     \"%(T1)#\n",
+    "print \"\\n n2 is %0.4f      \"%(n2)#\n",
+    "print \"\\n Tr2 is %0.3f Nm     \"%(Tr2)#\n",
+    "print \"\\n n3 is %0.4f      \"%(n3)#\n",
+    "print \"\\n Te is %0.3f Nm     \"%(Te)#\n",
+    "print \"\\n n4 is %0.4f      \"%(n4)#\n",
+    "  \n",
+    "  #The answer to T1 is misprinted in the book."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-4 - Page 453"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "F is 7.299 kN     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import tan,atan,pi\n",
+    "d=28#\n",
+    "P=300#\n",
+    "L=180#\n",
+    "p=8#\n",
+    "r1=16#\n",
+    "r2=46#\n",
+    "rm=(r1+r2)/2#\n",
+    "u1=0.12#\n",
+    "u2=0.15#\n",
+    "dm=d-(p/2)#\n",
+    "alpha=atan(p/(pi*dm))#\n",
+    "phi=atan(u1)#\n",
+    "T=P*L#\n",
+    "F=T/((dm*tan(alpha+phi)/2)+(u2*rm))#\n",
+    "F=F*10**-3#\n",
+    "print \"F is %0.3f kN     \"%(F)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-5 - Page 453"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "P is 23.6 kN     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt, pi, atan,tan\n",
+    "d=25#\n",
+    "p=8#\n",
+    "F=392.4#\n",
+    "L=250#\n",
+    "l=p*2#\n",
+    "u=0.14#\n",
+    "dm=d-(p/2)#\n",
+    "alpha=atan(l/(pi*dm))#\n",
+    "phi=atan(u)#\n",
+    "T=dm*tan(alpha+phi)/2#\n",
+    "M=F*L#\n",
+    "P=M/T*10**-3#\n",
+    "print \"P is %0.1f kN     \"%(P)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-6 - Page 454"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "P is 0.07 KW     \n",
+      "\n",
+      "n is 0.1659      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt, pi,atan,tan\n",
+    "d=52#\n",
+    "W=2.2*10**3#\n",
+    "p=8#\n",
+    "r1=15#\n",
+    "r2=30#\n",
+    "rm=(r1+r2)/2#\n",
+    "u1=0.15/cos(14.5*pi/180)#\n",
+    "dm=d-(p/2)#\n",
+    "alpha=atan(p/(pi*dm))#\n",
+    "phi=atan(u1)#\n",
+    "Ts=W*dm*tan(alpha+phi)/2#\n",
+    "u2=0.12#\n",
+    "Tc=u2*W*rm#\n",
+    "T=10**-3*(Ts+Tc)#\n",
+    "N=40#\n",
+    "w=2*pi*N/60#\n",
+    "P=T*w*10**-3#\n",
+    "To=W*dm/2*tan(alpha)#\n",
+    "n=To/(T*10**3)#\n",
+    "print \"P is %0.2f KW     \"%(P)#\n",
+    "print \"\\nn is %0.4f      \"%(n)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-7 - Page 455"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "d is 24 mm     \n",
+      "\n",
+      "p is 5 mm     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt, pi,atan,tan\n",
+    "alpha=atan(2*0.2/(pi*0.9))#\n",
+    "u1=0.15#\n",
+    "phi=atan(u1)#\n",
+    "P=200#\n",
+    "L=250#\n",
+    "Tt=P*L#\n",
+    "W=10*10**3#\n",
+    "u2=0.15#\n",
+    "x=Tt/W#\n",
+    "d=x/0.1716#\n",
+    "d=30#\n",
+    "p=6#\n",
+    "dr=0.8*d#\n",
+    "d=24#\n",
+    "p=5#\n",
+    "dr=d-p#\n",
+    "dm=d-(p/2)#\n",
+    "print \"d is %0.0f mm     \"%(d)#\n",
+    "print \"\\np is %0.0f mm     \"%(p)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 16-8 - Page 456"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " T is 145.242 Nm     \n",
+      "\n",
+      " n is 0.4751      \n",
+      "\n",
+      " a is 0.04894 mm      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt, pi,atan,tan\n",
+    "FOS=3#\n",
+    "sigut=380#\n",
+    "Ta=0.577*sigut/FOS#\n",
+    "d=25#\n",
+    "Tus=460#\n",
+    "Ps=pi*d*Tus#\n",
+    "siga=127#\n",
+    "dr=sqrt(Ps*4/(pi*siga))#\n",
+    "d=30#\n",
+    "p=6#\n",
+    "dr=d-p#\n",
+    "dm=d-(p/2)#\n",
+    "u1=0.15#\n",
+    "alpha=atan(p*2/(pi*dm))#\n",
+    "phi=atan(u1)#\n",
+    "T=Ps*dm*tan(alpha+phi)/2#\n",
+    "T1=16*T/(pi*dr**3)#\n",
+    "sigc=4*Ps/(pi*dr**2)#\n",
+    "sigmax=sigc/2+sqrt((sigc/2**2)+(T1**2))#\n",
+    "Tmax=sqrt((sigc/2**2)+(T1**2))#\n",
+    "n=tan(alpha)/tan(alpha+phi)#\n",
+    "Uo=Ps/2#\n",
+    "Ui=Uo/n#\n",
+    "wav=pi/2#\n",
+    "wmax=2*wav#\n",
+    "I=Ui*2/wmax**2#\n",
+    "k=0.4#\n",
+    "Ir=0.9*I*10**-3#\n",
+    "m=Ir/k**2#\n",
+    "R=0.4#\n",
+    "rho=7200#\n",
+    "a=sqrt(m/(2*pi*R*rho))#\n",
+    "T=T*10**-3#\n",
+    "print \" T is %0.3f Nm     \"%(T)#\n",
+    "print \"\\n n is %0.4f      \"%(n)#\n",
+    "print \"\\n a is %0.5f mm      \"%(a)#\n",
+    "  \n",
+    "#The difference in the answers of T is due to rounding-off of values."
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.9"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}