Melbourne engineering training section,post master general department Introduction (Page-1), Alternating Currents in telecommunication (Page-2), Trigonometry and Right (Page-4), Values Of alternating current and voltage (Page-10), Phase (Page-11), Resistance in A.C. Circuits (Page-12), Inducate in A.C .Circuits (Page-13), Capcatines in A.C. Circuits (Page-17), Addition of out of Phase Voltage or Currents (Page-21), Test Questions (Page-24). 621.31,APP 20221026144253.0