Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be None of these 4.8% and -3.2% 6% and -4% 3.2% and -1.6% None of these 4.8% and -3.2% 6% and -4% 3.2% and -1.6% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is (1 / 15) times the synchronous speed. 5 times the synchronous speed. (1 / 5) times the synchronous speed. 0.5 times the synchronous speed. (1 / 15) times the synchronous speed. 5 times the synchronous speed. (1 / 5) times the synchronous speed. 0.5 times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, armature reaction refers to what? Effect of field flux on the armature flux. None of these Effect of armature flux on the load. Effect of armature flux on the main field flux. Effect of field flux on the armature flux. None of these Effect of armature flux on the load. Effect of armature flux on the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor used in Lathe machine? D.C. cumulative compound motor. D.C. shunt motor. None of these D.C . series motor. D.C. cumulative compound motor. D.C. shunt motor. None of these D.C . series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of high viscosity. low BDV. low resistivity. low viscosity. high viscosity. low BDV. low resistivity. low viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following type of brush and their application is/are correct carbon brush → normal ratings electro graphite → large ratings All of these copper graphite → low voltage high current density carbon brush → normal ratings electro graphite → large ratings All of these copper graphite → low voltage high current density ANSWER DOWNLOAD EXAMIANS APP
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