removing problem statements

1 files changed, 37 insertions, 197 deletions

diff --git a/Industrial_Instrumentation/ch5.ipynb b/Industrial_Instrumentation/ch5.ipynb
index 575e68d6..66f7a8b4 100644
--- a/Industrial_Instrumentation/ch5.ipynb
+++ b/Industrial_Instrumentation/ch5.ipynb
@@ -1,6 +1,7 @@
 {
  "metadata": {
-  "name": ""
+  "name": "",
+  "signature": "sha256:12efbfeaa3ed3ebbe140abe577bbac08dcae30fc36caa52e184adf21fd445870"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -27,11 +28,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine :\n",
-      "(i) The thermal efficiency \n",
-      "(ii) The rate of heat rejection.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "Q1 = 1500./60; \t\t#kJ/s\n",
@@ -74,9 +71,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Is it possible to reach initial state by an adiabatic process ?\n",
-      "'''\n",
       "\n",
       "# Variables\n",
       "Q_12 = 30.; \t\t#kJ\n",
@@ -117,9 +111,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Find the co-efficient of performance and heat transfer rate in the condenser of a refrigerator \n",
-      "'''\n",
+      "\n",
       "# Variables\n",
       "Q2 = 12000.; \t\t\t#kJ/h\n",
       "W = 0.75*60*60; \t\t#kJ/h\n",
@@ -157,10 +149,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "determine the least power necessary to pump this heat out continuously\n",
-      "'''\n",
-      "# Variables\n",
+      "\n",
       "T2 = 261.; \t\t\t#K\n",
       "T1 = 308.; \t\t\t#K\n",
       "Q2 = 2.; \t\t\t#kJ/s\n",
@@ -197,11 +186,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine :\n",
-      "(i) Heat abstracted from outside ;\n",
-      "(ii) Co-efficient of performance.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -244,10 +229,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "What is the highest possible theoretical efficiency of a heat engine operating\n",
-      "with a hot reservoir of furnace gases \n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "T1 = 2373; \t\t\t#K\n",
@@ -284,12 +266,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "find :\n",
-      "(i) Efficiency of the system ;\n",
-      "(ii) The net work transfer ;\n",
-      "(iii) Heat rejected to sink.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "T1 = 523.; \t\t\t#K\n",
@@ -333,10 +310,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "An inventor claims that his engine has few specifications :\n",
-      "State whether his claim is valid or not.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "T1 = 1023.; \t\t#K\n",
@@ -382,9 +356,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Find the least rate of heat rejection per kW net output of the engine ?\n",
-      "'''\n",
       "\n",
       "# Variables\n",
       "T1 = 1273.; \t\t#K\n",
@@ -424,9 +395,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "calculate the power required\n",
-      "'''\n",
       "\n",
       "# Variables\n",
       "one_ton_of_refrigeration = 210.; \t\t\t#kJ/min\n",
@@ -467,10 +435,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Which source (1 or 2) would you choose to supply energy to an ideal reversible heat engine that is to produce large amount of\n",
-      "power if the temperature of the surroundings is 35\u00b0C ?\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "E = 12000.; \t\t#kJ/min\n",
@@ -522,12 +487,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      ".'''\n",
-      "(i) Determine the heat transfer to the refrigerant and the net heat transfer to the reservoir\n",
-      "at 50\u00b0C ;\n",
-      "(ii) Reconsider (i) given that the efficiency of the heat engine and the C.O.P. of the refrig-\n",
-      "erator are each 45 per cent of their maximum possible values.\n",
-      "'''\n",
+      "\n",
       "\n",
       "\n",
       "# Variables\n",
@@ -588,10 +548,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(i) determine the C.O.P. of the machine and work input required.\n",
-      "(ii) determine the overall C.O.P. of the system.\n",
-      "'''\n",
       "\n",
       "# Variables\n",
       "T1 = 298.; \t\t\t#K\n",
@@ -648,12 +604,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine :\n",
-      "(i) Power developed by the engine ;\n",
-      "(ii) Fuel consumed per hour.\n",
-      "Take enthalpy of fusion of ice = 334.5 kJ/kg.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "T_e1 = 493.; \t\t\t#K\n",
@@ -703,9 +654,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "determine the intermediate temperature.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "T1 = 550.; \t\t\t#K\n",
@@ -742,12 +691,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "determine :\n",
-      "(i) The temperature T 3 such that heat supplied to engine Q 1 is equal to the heat absorbed\n",
-      "by refrigerator Q 2 .\n",
-      "(ii) The efficiency of Carnot engine and C.O.P. of Carnot refrigerator.\n",
-      "'''\n",
       "\n",
       "# Variables\n",
       "T1 = 600.; \t\t\t#K\n",
@@ -794,9 +737,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "estimate the energy taken from the reservoir at 1077\u00b0C.\n",
-      "'''\n",
       "\n",
       "# Variables\n",
       "T3 = 278.; \t\t\t#K\n",
@@ -835,10 +775,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Classify which of the result report a reversible cycle or irreversible cycle or impossible\n",
-      "results.\n",
-      "'''\n",
+      "\n",
       "# Variables\n",
       "Q1 = 300.; \t\t\t#kJ/s\n",
       "T1 = 290.; \t\t\t#0C\n",
@@ -895,9 +832,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Verify the Clausius inequality for the cycle.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "P1 = 0.124*10**5; \t\t\t#N/m**2\n",
@@ -943,7 +878,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''Verify the Clausius Inequality'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "T1 = 437.;  \t\t\t#K\n",
@@ -990,9 +925,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Find the entropy changes for the iron cube and the water. Is the process reversible ? If so why ?\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1044,11 +977,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate :\n",
-      "(i) The net heat flow from the air.\n",
-      "(ii) The net entropy change.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1104,12 +1033,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate :\n",
-      "(i) The change of entropy,\n",
-      "(ii) The heat flow, and\n",
-      "(iii) The work done.\n",
-      "'''\n",
       "\n",
       "%pylab inline\n",
       "\n",
@@ -1222,9 +1145,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine the change in entropy.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1265,9 +1186,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate the change of entropy\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1317,9 +1236,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate the change of entropy \n",
-      "'''\n",
       "\n",
       "import math \n",
       "\n",
@@ -1369,10 +1285,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(i) Show that the process is irreversible ;\n",
-      "(ii) Calculate the change of entropy per kg of air.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1424,14 +1337,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine : \n",
-      "(i) Change in enthalpy ;\n",
-      "(ii) Change in internal energy ;\n",
-      "(iii) Change in entropy ;\n",
-      "(iv) Heat transfer ;\n",
-      "(v) Work transfer.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1488,13 +1394,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine :\n",
-      "(i) Change in internal energy,\n",
-      "(ii) Work done,\n",
-      "(iii) Heat transferred, and\n",
-      "(iv) Change in entropy\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1551,9 +1451,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "determine the net work. Also plot the processes on T-S diagram\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "from matplotlib.pyplot import *\n",
@@ -1644,11 +1542,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine :\n",
-      "(i) The heat supplied.\n",
-      "(ii) The entropy change.\n",
-      "'''\n",
+      "\n",
       "\n",
       "# Variables\n",
       "V1 = 0.004; \t\t\t#m**3\n",
@@ -1699,11 +1593,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine :\n",
-      "(i) Change in entropy.\n",
-      "(ii) Work done\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1756,12 +1646,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate :\n",
-      "(i) Final specific volume and temperature.\n",
-      "(ii) Change of internal energy, work done and heat interaction.\n",
-      "(iii) Change in entropy.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -1831,11 +1716,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(b)What would be the percentage error if the entropy change is calculated by dividing the\n",
-      "quantity of heat exchanged by the mean absolute temperature during the process ?\n",
       "\n",
-      "'''\n",
       "%pylab inline\n",
       "import math\n",
       "from matplotlib.pyplot import *\n",
@@ -1934,11 +1815,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "calculate :\n",
-      "(i) The net heat flow.\n",
-      "(ii) The overall change in entropy.\n",
-      "'''\n",
       "\n",
       "from matplotlib.pyplot import *\n",
       "from numpy import *\n",
@@ -2032,11 +1908,6 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(i) Constant volume heat addition till pressure becomes 5 bar, \n",
-      "(ii) Constant pressure cooling, and \n",
-      "(iii) Isothermal heating to initial state.\n",
-      "'''\n",
       "\n",
       "import math \n",
       "from matplotlib.pyplot import *\n",
@@ -2151,9 +2022,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine the entropy change of 4 kg of a perfect gas \n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "from scipy.integrate import quad \n",
@@ -2197,9 +2066,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "find the entropy of the gas at 25 bar and 750 K temperature.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "from scipy.integrate import quad \n",
@@ -2250,12 +2117,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate :\n",
-      "(i) Final equilibrium temperature,\n",
-      "(ii) Final pressure on each side of the diaphragm, and\n",
-      "(iii) Entropy change of system.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -2323,9 +2185,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Find the change in entropy in each of the adiabatic processes.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -2374,11 +2234,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(i) Determine the heat interactions with the other two sources of heat.\n",
-      "(ii) Evaluate the entropy change due to each heat interaction with the engine.\n",
-      "(iii) Total entropy change during the cycle.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "from numpy import *\n",
@@ -2448,9 +2304,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Determine the maximum amount of work that can be recovered as the system is cooled down to the temperature of the reservoir.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "from scipy.integrate import quad \n",
@@ -2503,9 +2357,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Establish the direction of the flow of the air in the duct.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "from scipy.integrate import quad \n",
@@ -2562,9 +2414,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "Calculate the change of entropy due to mixing process.\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -2610,14 +2460,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(a)find :\n",
-      "(i) Entropy change of water ;\n",
-      "(ii) Entropy change of the heat reservoir ;\n",
-      "(iii) Entropy change of the universe.\n",
-      "(b)what will the entropy change of the universe be ?\n",
-      "(c) Explain how water might be heated from 0\u00b0C to 90\u00b0C \n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",
@@ -2694,10 +2537,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "'''\n",
-      "(i) Determine the entropy increase of the universe.\n",
-      "(ii) What is the minimum amount of work necessary to convert the water back into ice at \u2013 5\u00b0C ?\n",
-      "'''\n",
+      "\n",
       "\n",
       "import math \n",
       "\n",