Revised list of TBCs

1 files changed, 1 insertions, 107 deletions

diff --git a/basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter1.ipynb b/basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter1.ipynb
index e394c7f6..7f27495e 100755..100644
--- a/basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter1.ipynb
+++ b/basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter1.ipynb
@@ -31,13 +31,10 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "q1=q2=0.1\n",
     "r=1\n",
     "e=8.84*(10**-12)\n",
-    "\n",
     "E=(q1*q2)/float(4*3.14*e*(r**2))\n",
-    "\n",
     "print \"E=\",format(E,'.2f'),\"N\""
    ]
   },
@@ -66,34 +63,21 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#given\n",
-    "\n",
     "q1=2*(10**-9)\n",
     "q2=3*(10**-9)\n",
-    "\n",
     "#q1 and q2 are 6m apart in air\n",
     "#on substituting the values in the formula for calculating force between q and q1 and q and q2 we get 9[(3/(6-x**2)-(2/(x**2)))]\n",
-    "\n",
     "import sympy as sp\n",
     "x=sp.Symbol('x')\n",
     "sp.integrate(((3/(6-x)**2)-(2/x**2)),x)\n",
-    "\n",
     "from scipy.integrate import quad\n",
     "import scipy.integrate\n",
-    "\n",
     "def f(x):\n",
     "    return -(x+12)/(x**2 - 6*x)\n",
-    "    \n",
-    "    \n",
-    "    \n",
-    "\n",
     "i=quad(f,1,4)\n",
     "print (i[0]),\"J\"\n",
-    "\n",
-    "\n",
     "print \"Vab=-vba=5.4V\"\n",
-    "\n",
     "#the value obtained is directly given with print \n",
     "\n",
     "\n",
@@ -126,10 +110,8 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "charge=1.6*(10**-19)\n",
     "iav=1.6*(10**-19)*(10**19) #total charge movement per second\n",
-    "\n",
     "print \"iav=\",format(iav,'.1f'),\"A\""
    ]
   },
@@ -157,17 +139,13 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "p=30\n",
     "i=10\n",
-    "\n",
     "v=p/i\n",
     "dt=1\n",
     "dq=i*dt\n",
-    "\n",
     "dw=v*dq\n",
     "energy=dw/i\n",
-    "\n",
     "print \"energy of each coulomb of charge=\",format(energy,'.1f'),\"J\"\n",
     "\n",
     "\n"
@@ -197,14 +175,10 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#given\n",
-    "\n",
     "p=15000\n",
     "n=1500\n",
-    "\n",
     "t=(60*p)/float(1500*2*3.14)\n",
-    "\n",
     "print \"torque=\",format(t,'.2f'),\"Nm\"\n"
    ]
   },
@@ -234,13 +208,10 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "res=1.72*(10**-8)\n",
     "l=200\n",
     "a=25*(10**-6)\n",
-    "\n",
     "R=(res*l)/float(a)\n",
-    "\n",
     "print \"R=\",format(R,'.4f'),\"ohm\""
    ]
   },
@@ -268,15 +239,12 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#given and derived\n",
     "meanrad=0.08\n",
     "meanlen=3.14*meanrad\n",
     "a=0.04*0.04\n",
     "res=1.72*(10**-8)\n",
-    "\n",
     "R=(res*meanlen)/float(a)\n",
-    "\n",
     "print \"R=\",format(R,'.8f'),\"ohm\""
    ]
   },
@@ -305,17 +273,12 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "res=0.02*(10**-6)\n",
     "l=4000*80*(10**-2)\n",
     "a=0.8*(10**-6)\n",
-    "\n",
     "R=(res*l)/float(a)\n",
-    "\n",
     "print \"R=\",format(R,'.4f'),\"ohm\"\n",
-    "\n",
     "power=(230*230)/float(80)\n",
-    "\n",
     "print \"power=\",format(power,'.2f'),\"W\""
    ]
   },
@@ -345,7 +308,6 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "lal=7.5\n",
     "lcu=6\n",
     "rcu=0.017*(10**-6)\n",
@@ -353,21 +315,13 @@
     "d=(10**-6)\n",
     "a=((3.14*d))/float(4)\n",
     "Ral=(lal*ral)/float(a)\n",
-    "\n",
     "print \"R=\",format(Ral,'.4f'),\"ohm\"\n",
-    "\n",
     "ial=3\n",
-    "\n",
     "pv=Ral*ial\n",
-    "\n",
-    "\n",
     "Rcu=pv/float(2)\n",
     "print Rcu\n",
-    "\n",
     "a=(rcu*lcu)/float(Rcu)\n",
-    "\n",
     "dcu=(((a*4)/3.14)**0.5)\n",
-    "\n",
     "print \"dcu=\",format(dcu,'.6f'),\"nm\"\n",
     "\n",
     "\n"
@@ -397,29 +351,21 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#given and derived\n",
-    "\n",
     "a=100/0.32 #area required to dissipate 100W power\n",
     "d=5\n",
     "#length of cyclinder L,length of wire if l,diameter of the wire is d\n",
     "L=a/float(3.14*d)\n",
-    "\n",
     "r=100/1**2\n",
-    "\n",
     "#spacing is d cm\n",
     "#distance along the axis of the cylinder is 2d cm\n",
-    "\n",
     "#no of turns is 10/d\n",
     "#length of one turn of the wire is 3.14*5 cm\n",
     "#length of the wire is 50*3.14/d\n",
     "res=10**-4\n",
-    "\n",
     "#d=(((2*10**-4))**(0.6))\n",
     "d=0.058\n",
-    "\n",
     "l=(50*3.14)/d\n",
-    "\n",
     "print \"l=\",format(l,'.6f'),\"cm\"\n",
     "\n",
     "\n"
@@ -449,22 +395,15 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#given\n",
     "v=250\n",
     "i=5\n",
     "i1=3.91\n",
-    "\n",
     "t0=0.00426 #temperature coefficient\n",
-    "\n",
     "r15=v/i #at 15 degrees\n",
-    "\n",
     "rt=v/i1 #at t degrees\n",
-    "\n",
     "l=(rt*(1+t0*15))/50 #left hand side\n",
-    "\n",
     "t=(l-1)/t0\n",
-    "\n",
     "print \"t=\",format(t,'.2f'),\"centigrade\""
    ]
   },
@@ -492,15 +431,11 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#this is a derivation by substitution problem\n",
-    "\n",
     "#al1=al0/(1+al0*t1)\n",
     "#al2=al0/(1+al0*t2)\n",
     "#where t1 and t2 are different temperatures al0,al1 and al2 are temperature coefficients\n",
-    "\n",
     "#substitute al0 in al2\n",
-    "\n",
     "#on deriving and solving for al2 we get,\n",
     "print \"al2=al1/(1+al1*(t1-t2))\"\n"
    ]
@@ -530,25 +465,16 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#values are obtained from the graph\n",
-    "\n",
     "i=10 #10t A for 0 to 1 second\n",
-    "\n",
     "d=10 #where di/dt is 10\n",
     "L=2\n",
     "# at one second\n",
-    "\n",
     "v=L*d\n",
-    "\n",
     "print \"v=\",format(v,'.1f'),\"v\"\n",
-    "\n",
     "#for 1 to 5 seconds\n",
-    "\n",
     "d=-5\n",
-    "\n",
     "#at t=3 seconds voltage across the inductor is\n",
-    "\n",
     "v=L*d\n",
     "print \"v=\",format(v,'.1f'),\"v\"\n"
    ]
@@ -580,33 +506,21 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#given\n",
-    "\n",
     "dv=20 #dv/dt\n",
     "c=25*(10**-6)\n",
-    "\n",
     "#case a\n",
-    "\n",
     "i=c*dv\n",
-    "\n",
     "print \"i=\",format(i,'.4f'),\"A\"\n",
-    "\n",
     "#case b\n",
     "q=c*dv\n",
-    "\n",
     "print \"q=\",format(q,'.4f'),\"C\"\n",
-    "\n",
     "#case c\n",
-    "\n",
     "p=dv*i\n",
-    "\n",
     "print \"p=\",format(p,'.4f'),\"W\"\n",
-    "\n",
     "#case d\n",
     "v=dv**2\n",
     "wc=(c*v)/2\n",
-    "\n",
     "print \"wc=\",format(wc,'.4f'),\"J\"\n",
     "    "
    ]
@@ -639,28 +553,18 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "l=1\n",
     "b=1.5\n",
     "i=50\n",
     "u=5\n",
-    "\n",
     "#case a\n",
-    "\n",
     "f=b*i*l\n",
-    "\n",
     "print \"f=\",format(f,'.1f'),\"N\"\n",
-    "\n",
     "#case b\n",
-    "\n",
     "p=f*u\n",
-    "\n",
     "print \"p=\",format(p,'.1f'),\"W\"\n",
-    "\n",
     "#case c\n",
-    "\n",
     "e=b*l*u\n",
-    "\n",
     "print \"e=\",format(e,'.1f'),\"V\"\n"
    ]
   },
@@ -689,23 +593,17 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#e=b*l*u*sin(angle)\n",
-    "\n",
     "b=0.5\n",
     "l=40\n",
     "u=1.5\n",
-    "\n",
     "#when angle=90 sin(90)=1=s\n",
     "s=1\n",
     "e=b*l*u*s\n",
-    "\n",
     "print \"e=\",format(e,'.1f'),\"V\"\n",
-    "\n",
     "#when angle=30 sin(angle)=s=0.5\n",
     "s=0.5\n",
     "e=b*l*u*s\n",
-    "\n",
     "print \"e=\",format(e,'.1f'),\"V\"\n",
     "\n"
    ]
@@ -734,7 +632,6 @@
    ],
    "source": [
     "import math\n",
-    "\n",
     "#applying kcl to circuit at node b i3+i4=6-4=2\n",
     "i3=i4=1 #potential of node b with respect to node c\n",
     "vb=8\n",
@@ -742,11 +639,8 @@
     "va=6 #potential of node a w.r.t note c\n",
     "i2=3\n",
     "#applying kcl to node a\n",
-    "\n",
     "isa=1\n",
-    "\n",
     "vs=va+2*isa\n",
-    "\n",
     "print \"vse=\",format(vs,'.1f'),\"V\"\n",
     "\n"
    ]
@@ -777,7 +671,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython2",
-   "version": "2.7.9"
+   "version": "2.7.5"
   }
  },
  "nbformat": 4,