Electrical Machines What is power factor of a 3 - φ induction motor at no load? Equal to 1. Low. Same as full load. High. Equal to 1. Low. Same as full load. High. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3 - Φ, 4 pole, 50 Hz IM rotating at full load speed of 1440 rpm, calculate speed of rotor field with respect to rotor structure and stator structure respectively? 60, 1500. 60, 1440. 50, 1500. 1440, 1500. 60, 1500. 60, 1440. 50, 1500. 1440, 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Crawling in an induction motor is due to time harmonics in supply. insufficient starting torque. slip ring rotor. space harmonics produced by winding currents. time harmonics in supply. insufficient starting torque. slip ring rotor. space harmonics produced by winding currents. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During no load test, an induction motor draws power for core loss and windage and friction loss. for copper loss and windage friction loss. for core loss and copper loss. only for the small copper loss. for core loss and windage and friction loss. for copper loss and windage friction loss. for core loss and copper loss. only for the small copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalanced supply voltage given to a 3 - φ, delta connected induction motor will cause negative sequence current. less heating of the rotor. less heating of the rotor. all of these. negative sequence current. less heating of the rotor. less heating of the rotor. all of these. ANSWER DOWNLOAD EXAMIANS APP
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