00458nam a22000977a 4500082001700000100003500017245004100052260006000093300004400153650016300197  a621.312bTHE  aTheraja B. L. aA. K. Theraja   aA textbook of electrical technology   aNew Delhi bNirja Construction and Development Coc1951  a2 Vol, ix, 1807 p. b: ill. c; 24 cm.   aElectric power system aElectric power production vMechanical energy conversion vD.C. generators vRection and commutation vElectromechanical system vFEAS