Utilisation of Electrical Power

3-phase induction motor acceleration anode applications arc welding armature current armature resistance Back e.m.f. circuit coil compressor constant cooling copper copper loss cost D.C. motors D.C. series motor D.C. shunt motor dielectric heating divertor efficiency electrical drives electrodes electrolyte employed energy Example field current field resistance field winding flux frequency full-load torque furnace given heat Hence I₁ illumination increases input km/h lamp load torque locomotive losses machine magnetic maximum torque metal method N₁ N₂ no-load operation output phase power factor R₁ R₂ ratio Rdiv reactance reduced refrigeration refrigeration system regenerative braking rheostatic rotating rotor series field shown in Fig shunt field single-phase slip slip ring Solution speed control squirrel-cage starting torque stator stepper motor sub-stations supply voltage surface synchronous motor synchronous speed T₁ T₂ temperature rise thyristor tonnes torque traction motors tractive effort vapour voltage volts