Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 0.905. 0.05. 1.1. 20. 0.905. 0.05. 1.1. 20. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of supply frequency. Change of number of pole. Change of rotor resistance. Change of supply voltage. Change of supply frequency. Change of number of pole. Change of rotor resistance. Change of supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of low resistivity. low BDV. high viscosity. low viscosity. low resistivity. low BDV. high viscosity. low viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to capacitor run IM. transformer with short-circuited secondary. synchronous motor. repulsion motor type starting. capacitor run IM. transformer with short-circuited secondary. synchronous motor. repulsion motor type starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 88.8%. 59.2%. 48.0%. 57.1%. 88.8%. 59.2%. 48.0%. 57.1%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Scott connections are used for single phase to three phase transformation. any of the above. three phase to two phase transformation. three phase to single phase transformation. single phase to three phase transformation. any of the above. three phase to two phase transformation. three phase to single phase transformation. ANSWER DOWNLOAD EXAMIANS APP
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