Added(A)/Deleted(D) following books

 A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_0cfmKH1.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_0vE2Agb.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_1pO6mlQ.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_2DVKX4L.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_2tbXSIz.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_4DFRgPd.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_5BlMA37.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_6BpYQtS.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_7oQcI9D.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_7osIJcS.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_BljETDD.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_BrFEmk0.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_Cde70Gn.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_DGhuTd1.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_DnIfPiv.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_Ekp0nuF.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_HETTD7r.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_KlAE574.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_PjpHu09.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_PxZ5uHj.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_Q4fBBjq.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_T4mzLHI.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_UAITY0U.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_VEDuU8Y.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_WUGl4w9.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_a1WJQcD.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_bH5qWgx.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_e3fJkOS.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_eA2iMeu.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_eYNgYIE.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_gBECinX.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_k1gQDvp.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_kA9oA4k.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_kMX1E4Y.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_ludD60G.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_nK3AyHX.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_nbFgz6I.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_qJkWZ89.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_qaQF6hK.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_tuNOeJT.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_vEF8v8F.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_w1kpJlA.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_wmNEbtc.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_x8Hd3Fi.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A._K._Theraja,_B.L_Thereja/c_zAHS5nJ.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_2xS3kzU.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_38fwENU.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_5kVbclY.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_7O92CYB.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_7qFSSzO.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_87EQl05.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_8HPcuEd.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_ASNXGJK.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_BQB3vIT.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_BdKInur.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_CK1r2By.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_EIfrtvz.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_EnoiEf8.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_GocmY97.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_Gw8rqEI.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_HDB18kP.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_IdqLKrq.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_InkBya3.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_K9q4NLY.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_M6VOIpZ.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_MATCOZO.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_ObFCoay.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_PD3CwbT.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_PVVeE6Y.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_PdPqoEJ.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_QritHDf.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_SUaeUO3.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_TkYEtJb.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_UDdHMGf.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_VZgSOpH.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_Yj265eH.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_ZDKRJ4L.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_ZyyCtEx.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_dGjHrPW.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_egC1oo4.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_enqQgpr.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_gD58ZqH.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_gETWb31.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_gSjl2uf.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_hnPoOrk.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_hoBkBgf.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_i133Mfc.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_lFaQS0L.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_lsoSAFi.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_n2YSl8Q.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_ntrOIw3.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_nxmLE4m.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_qxxk2Xv.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_r9cPZxQ.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_tIs0JkF.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_uJFb1kJ.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_uwh7oAV.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_vwGXJQF.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_wA2NdKL.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_wXUDs09.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_x0i8ax0.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_xD8c7xw.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_xKNxc2D.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_ye04nNO.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chap_zy8Cvqw.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter25.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter26.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter27.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter28.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter29.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter30.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter31.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter32.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter33.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter34.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter35.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter36.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter37.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter38.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/chapter39.ipynb
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/screenshots/29.png
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/screenshots/32.png
A  A_Textbook_of_Electrical_Technology_AC_and_DC_Machines_by_A_K_Theraja_B_L_Thereja/screenshots/5.png
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter1.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter10.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter11.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter12.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter2.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter3.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter4.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter5.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter6.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter7.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/Chapter8.ipynb
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/screenshots/11.png
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/screenshots/22.png
A  BSc_1st_Year_Physics_by_P._Balabhaskar,_N._Srinivasa_Rao,_B._Sanjeeva_Rao/screenshots/33.png
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter1.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter10.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter11.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter12.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter13.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter14.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter15.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter2.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter3.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter4.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter5.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter6.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter7.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter8.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter9.ipynb
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/screenshots/11.png
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/screenshots/22.png
A  BSc_3rd_Year_Physics(Paper-4)_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/screenshots/33.png
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/Chapter01.ipynb
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/Chapter03.ipynb
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/Chapter04.ipynb
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/Chapter05.ipynb
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/screenshots/Ex3.4.png
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/screenshots/Ex4.4.png
A  Electric_Drives_Concepts_And_Applications_by_Vedam_Subrahmanyam/screenshots/Ex4.8.png
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter1.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter12.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter13.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter14.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter15.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter16.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter17.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter18.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter19.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter2.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter20.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter21.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter22.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter23.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter24.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter25.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter3.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter4.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter5.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter6.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter7.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter8.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/Chapter9.ipynb
A  Electronic_Communication_Systems_by_Roy_Blake/screenshots/Chapter12.png
A  Electronic_Communication_Systems_by_Roy_Blake/screenshots/Chapter13.png
A  Electronic_Communication_Systems_by_Roy_Blake/screenshots/chapter1.png
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER1.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER2.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER3.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER4.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER5.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER6.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER7.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./CHAPTER8.ipynb
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./screenshots/figure1.png
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./screenshots/figure2.png
A  Engineering_Mechanics:_Statics_&_Engineering_Mechanics:_Dynamics_by_Meriam,_J._L.,_&_Kraige,_L._G./screenshots/figure3.png
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_10_Moments_of_Inertia.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_11__Virtual_Work.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_12_Kinematics_o_KMlkVxo.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_13_Kinetics_of__QCPBknl.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_14_Kinetics_of__nM3MpcX.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_15_Kinetics_of__XnxZDvg.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_16_Planar_Kinem_iVoLBQW.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_17_Planar_Kinet_WgJywgt.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_18_Planar_Kinet_zX8jNLD.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_19_Planar_Kinet_mpYSt47.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_1_General_Principles.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_2_Force_Vectors.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_3_Equilibrium_o_hYESk4B.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_4_Force_System__zCBXq4n.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_5_Equilibrium_o_wA2OXD7.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_6_Structural_Analysis.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_7_Internal_Forces.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_8_Friction.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/Chapter_9_Center_of_Gra_jwxxiZg.ipynb
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/screenshots/plot1.png
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/screenshots/plot2.png
A  Engineering_Mechanics_(Statics,_Dynamics),_by_Hibler_and_Gupta/screenshots/plot3.png
A  Engineering_Mechanics_by_R.K_Bansal/chapter_1.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_11.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_12.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_13.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_14.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_15.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_16.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_17.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_18.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_2.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_20.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_3.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_4.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_5.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_6.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_7.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_8.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/chapter_9.ipynb
A  Engineering_Mechanics_by_R.K_Bansal/screenshots/bmd1.png
A  Engineering_Mechanics_by_R.K_Bansal/screenshots/sfd.png
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter10_ljUjU8j.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter11_5r7Matr.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter12.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter1_QhYeq33.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter2_GK3uH9r.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter3_18OmDFC.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter4_fMX8RWT.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter5_2AAnLS8.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter6_lGPDUWp.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter7_Ie2FcUI.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter8_vyeGLD8.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/Chapter9_4YOTRPU.ipynb
A  Introduction_to_Heat_Transfer_by_S._K._Som/screenshots/9.7_xRDyNJc.png
A  Introduction_to_Heat_Transfer_by_S._K._Som/screenshots/Ex10.7_G48Lnpj.png
A  Introduction_to_Heat_Transfer_by_S._K._Som/screenshots/Ex11.4_8WqJsrO.png
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_10_pO7WExy.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_2_FxNgKwZ.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_3_xv1zQ8m.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_4_HtsOENB.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_5_nuHXFeE.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_6_Ffb7zrN.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_7_GmkvL5A.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_8_BLulAvR.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/chapter_9_YALeeEe.ipynb
A  Strength_Of_Materials_by_S_S_Bhavikatti/screenshots/BMD_dLcLPep.JPG
A  Strength_Of_Materials_by_S_S_Bhavikatti/screenshots/SFD_1.JPG
A  Strength_Of_Materials_by_S_S_Bhavikatti/screenshots/SFD_2.JPG
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter1.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter10.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter11.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter12.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter13.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter14.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter15.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter16.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter17.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter18.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter19.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter4.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter5.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter6.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter7.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter8.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/Chapter9.ipynb
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/screenshots/Chapter4.png
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/screenshots/Chapter5.png
A  The_Elements_of_Physical_Chemistry_by_S._Glasstone/screenshots/Chapter6.png
A  "sample_notebooks/Sushovan Jena/Chapter1.ipynb"

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 1: Introduction to Communication System"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1: pg 7"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "WAVELENGTH IN FREE SPACE IS  300.0 m\n",
+      "WAVELENGTH IN FREE SPACE IS  11.1 m\n",
+      "WAVELENGTH IN FREE SPACE IS  7.5 cm\n"
+     ]
+    }
+   ],
+   "source": [
+    "# page no 7\n",
+    "#calculate the wavelength in all cases\n",
+    "# prob no 1.1\n",
+    "#part a) freq= 1MHz(AM radio broadcast band)\n",
+    "# We have the equation c=freq*wavelength\n",
+    "c=3.*10**8;\n",
+    "f=1.*10**6;\n",
+    "#calculations\n",
+    "wl=c/f;\n",
+    "print 'WAVELENGTH IN FREE SPACE IS ',wl,'m'\n",
+    "#part B) freq= 27MHz(CB radio band)\n",
+    "f=27.*10**6;\n",
+    "wl=c/f;\n",
+    "print 'WAVELENGTH IN FREE SPACE IS ',round(wl,1),'m'\n",
+    "#part C) freq= 4GHz(used for satellite television)\n",
+    "f=4*10**9;\n",
+    "wl=c/f;\n",
+    "print 'WAVELENGTH IN FREE SPACE IS ',wl*100,'cm'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 4: pg 18"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "noise power contributed by resistor 4.14e-17 W\n"
+     ]
+    }
+   ],
+   "source": [
+    "\n",
+    "# page no 18\n",
+    "#calculate the noise power\n",
+    "# prob no. 1.4\n",
+    "# In given problem noise power bandwidth is 10kHz; resistor temp T(0c)=27\n",
+    "# First we have to convert temperature to kelvins:\n",
+    "T0c=27.;\n",
+    "Tk=T0c+273.;\n",
+    "# noise power contributed by resistor , Pn= k*T*B\n",
+    "k=1.38*10**(-23);\n",
+    "B=10*10**3;\n",
+    "#calculations\n",
+    "Pn= k*Tk*B;\n",
+    "#results\n",
+    "print 'noise power contributed by resistor',Pn,'W'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 5: pg 20"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The noise power is 24.3 pW\n",
+      "The noise voltage is 5.4 muvolts\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "# page no 20\n",
+    "#calculate the noise power and voltage\n",
+    "# prob no 1.5\n",
+    "from math import sqrt\n",
+    "# In the given problem B=6MHz, Tk=293, k=1.38*10**-23\n",
+    "B=6*10**6; Tk=293; k=1.38*10**-23;R=300;\n",
+    "#calculations\n",
+    "Pn=k*Tk*B;\n",
+    "# Th noise voltage is given by Vn=sqrt(4*k*Tk*B*R)\n",
+    "Vn=sqrt(4*k*Tk*B*R);\n",
+    "#results\n",
+    "print 'The noise power is',round(Pn*10**15,1),'pW'\n",
+    "print 'The noise voltage is',round(Vn*10**6,1),'muvolts'\n",
+    "# only one-half of this voltage is appears across the antenna terminals, the other appears across the source resistance. Therefore the actual noise voltag at the input is 2.7 uV"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 6: pg 21"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Noise current is 0.133 muA\n",
+      "current through the diode is 278.0 mA\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "# page no 21\n",
+    "#calculate the current\n",
+    "# prob no 1.6\n",
+    "# given: FM broadcast receiver :- Vn=10uV, R=75V, B=200 kHz \n",
+    "Vn=10.;#in uV\n",
+    "R=75.; B=200.*10**3;\n",
+    "#calculations\n",
+    "#By Ohm's law\n",
+    "In=Vn/R;\n",
+    "print 'Noise current is',round(In,3),'muA'\n",
+    "# Noise votlage is also given as In=sqrt(2*q*Io*B)\n",
+    "q=1.6*10**-19;\n",
+    "# solving this for Io=In**2/2*q*B;\n",
+    "Io=(In*10**-6)**2/(2*q*B);\n",
+    "print 'current through the diode is',round(Io*1000.,0),'mA'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 7: pg 23"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Open-ckt noise voltage is  779.0 nanovolts\n",
+      "The load power is 5.06e-16 W\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "#page no 23\n",
+    "#calculate the load power and open-ckt noise voltage\n",
+    "#pro no 1.7\n",
+    "from math import sqrt\n",
+    "#Given:refer fig.1.12 of page no.23;R1=100ohm,300K;R2=200ohm,400k;B=100kHz;Rl=300ohm\n",
+    "R1=100.;T1=300.;R2=200.;T2=400.;B=100.*10**3;Rl=300.;k=1.38*10**-23;\n",
+    "#calculations\n",
+    "#open-ckt noise voltage is given by\n",
+    "#Vn1 =sqrt(Vr1**2 + Vr2**2)\n",
+    "#    =sqrt[sqrt(4kTBR1)**2 + sqrt(4kTBR2)**2]\n",
+    "#by solving this we get Vn1=sqrt[4kB(T1R1 + T2R2)]\n",
+    "Vn1=sqrt(4*k*B*(T1*R1 + T2*R2));\n",
+    "# since in this case the load is equal in value to the sum of the resistors,\n",
+    "# one-half of this voltage is appear across the load.\n",
+    "# Now the load power is P=  Vn1**2/Rl\n",
+    "P=  (Vn1/2)**2/Rl;\n",
+    "#results\n",
+    "print 'Open-ckt noise voltage is ',round(Vn1*1e9),'nanovolts'\n",
+    "print 'The load power is',P,'W'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 8: pg 24"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The power ratio in dB 14.0\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "# page no 24\n",
+    "#Calculate the power ratio\n",
+    "# prob no 1.8\n",
+    "import math\n",
+    "# Given: N=0.2W; S+N=5W; :. S=4.8W\n",
+    "N=0.2; S=4.8;\n",
+    "#calculations\n",
+    "p=(S+N)/N;\n",
+    "pdB=10*math.log10(p);\n",
+    "#results\n",
+    "print 'The power ratio in dB',round(pdB)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 9: pg 25"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The noise figure is 3.0\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "#page no 25\n",
+    "#calculate the noise figure\n",
+    "#prob no 1.9\n",
+    "#Given: Si=100uW; Ni=1uW; So=1uW; No=0.03W\n",
+    "Si=100.; Ni=1.; So=1; No= 0.03# all powers are in uW\n",
+    "#calculations\n",
+    "r1=Si/Ni;# input SNR\n",
+    "r2=So/No;# output SNR\n",
+    "NF=r1/r2;# Amplifier noise figure \n",
+    "#results\n",
+    "print 'The noise figure is',NF"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 10: pg 25"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "SNR at the output is  36 dB\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "#page no 25\n",
+    "#calculate the SNR at output\n",
+    "#prob no 1.10\n",
+    "#giiven: SNRin=42 dB, NF=6dB\n",
+    "# NF in dB is given as SNRin(dB)-SNRop(dB)\n",
+    "SNRin=42 ; NF=6;\n",
+    "#calculations\n",
+    "SNRop=SNRin-NF;\n",
+    "#results\n",
+    "print 'SNR at the output is ',SNRop,'dB'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 11: pg 27"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The noise temperature is  169.65 K\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "#page no 27\n",
+    "#calculate the noise temperature\n",
+    "# prob no 1.11\n",
+    "#Given NFdB=2dB,:.NF=antilog(NFdB)/10=1.585\n",
+    "NF=1.585;\n",
+    "#calculations\n",
+    "Teq=290*(NF-1);\n",
+    "#results\n",
+    "print 'The noise temperature is ',Teq,'K'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12: pg 29"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The power gain is 7500.0\n",
+      "The noise figure is 2.316\n",
+      "The noise temperature is 382.0 K\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "#page no 29\n",
+    "#calculate the power gain, noise figure, temperature\n",
+    "#prob no 1.12\n",
+    "#Given: \n",
+    "A1=10.;A2=25.;A3=30.;NF1=2.;NF2=4.;NF3=5.;\n",
+    "#calculations\n",
+    "At=A1*A2*A3;\n",
+    "print 'The power gain is',At\n",
+    "# The noise figure is given as \n",
+    "NFt=NF1+((NF2-1)/A1) + ((NF3-1)/(A1*A2));\n",
+    "print 'The noise figure is',NFt\n",
+    "# Noise temp can be found as \n",
+    "Teq=290*(NFt-1);\n",
+    "print 'The noise temperature is',round(Teq),'K'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 13: pg 34"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "A)The freq is 110.0 MHz\n",
+      "The power in dBm -30 dBm\n",
+      "The power is 1e-06 W\n",
+      "The voltage is 0.00707 volts\n",
+      "B)The freq is 7.4 MHz\n",
+      "The power is 79.4 W\n",
+      "The power in dBm 9 dBm\n",
+      "The voltage is 630.0 volts\n",
+      "C)The freq is 546 MHz\n",
+      "The voltage is 16.8 mvolts\n",
+      "The power is 5.64 uW\n",
+      "The power in dBm -22.5 dBm\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "# page no 34\n",
+    "#calculate the power and voltage in all cases\n",
+    "# prob no1.13 refer fig 1.20 of page no 34\n",
+    "# part A) The signal frequency is f1=110MHz.\n",
+    "from math import log10,sqrt\n",
+    "f=110.;# in MHz\n",
+    "#calculations and results\n",
+    "print 'A)The freq is',f,'MHz'\n",
+    "#The signal peak is two divisions below the reference level of -10dBm, with 10dB/division ,so its -30dBm.\n",
+    "PdBm=-30;\n",
+    "print 'The power in dBm',PdBm,'dBm'\n",
+    "# The equivalent power can be found from P(dBm)=10logP/1 mW\n",
+    "#P(mW)=antilog dBm/10= antilog -30/10=1*10**-3mW=1uW\n",
+    "#the voltage can be found from the graph but it is more accurately from P=V**2/R\n",
+    "P=10**-6; R=50;\n",
+    "print 'The power is',P,'W'\n",
+    "V=sqrt(P*R);\n",
+    "print 'The voltage is',round(V*10e3,2),'mvolts'\n",
+    "\n",
+    "# part B)The signal is 1 division to theleft of center, with 100kHz/div. The freq is 100kHz less than the ref freq of 7.5MHz\n",
+    "f=7.5-0.1;# in MHz\n",
+    "print 'B)The freq is',f,'MHz'\n",
+    "# With regards to the amplitude, the scale is 1dB/div & the signal is 1 div below the reference level. Therefore the signal has a power level given as\n",
+    "PdBm=10-1;# in dBm\n",
+    "# This can be converted to watts & volts as same in part A\n",
+    "#P(mW)=antilog dBm/10= antilog 9/10=7.94mW\n",
+    "P=7.94*10**-3; R=50;\n",
+    "print 'The power is',round(P*10e3,2),'mW'\n",
+    "print 'The power in dBm',PdBm,'dBm'\n",
+    "V=sqrt(P*R);\n",
+    "print 'The voltage is',round(V*1000.),'mvolts'\n",
+    "\n",
+    "#part C) The signal is 3 divisions to the right of the center ref freq of 543MHz, with 1MHz/div. Therefore the freq is \n",
+    "f=543+3*1;# in MHz\n",
+    "print 'C)The freq is',f,'MHz'\n",
+    "# from the spectrum, signal level is\n",
+    "V=22.4*6/8;\n",
+    "print 'The voltage is',V,'mvolts'\n",
+    "# power is given as\n",
+    "P=V**2/R;\n",
+    "print 'The power is',round(P,2),'uW'\n",
+    "PdBm=10*log10(P*10**-6/10**-3);\n",
+    "print 'The power in dBm',round(PdBm,1),'dBm'"
+   ]
+  }
+ ],
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