A Short Course in the Testing of Electrical Machinery for Non-electrical Students

A.C. voltage adjusted alternating current ammeter ampere-turns amperes armature circuit armature current armature reaction armature resistance brake brushes Bus Bar bus-bars capacity cent coil commutator bars compound conductors connected constant copper loss current flowing current will flow decrease determine direct current drop effective value efficiency electrical equal excitation exert external characteristic field resistance frequency full load current full load value H.P. Output hysteresis impressed E.M.F. impressed voltage increase inductance reaction induction motor input line voltage machine magnetic field magnetization curve measured meters method necessary non-inductive load obtained overload plot poles potential power factor rated speed rated value rated voltage reactance resistance reaction rheostat rotary rotating rotor circuit series motor short circuit shown in Fig shunt field current shunt motor slip rings switch synchronous motor terminal voltage three phase torque transformer value of armature value of current varies vector voltmeter voltmeter leads volts wattmeter reading watts wire