Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2HZ 2.5Hz 1 Hz 50Hz 2HZ 2.5Hz 1 Hz 50Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of Heavy sparking at the first stud of starting resistance steps. Heavy sparking at brushes. Both of above. None of these. Heavy sparking at the first stud of starting resistance steps. Heavy sparking at brushes. Both of above. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Air core transformer as compared to iron core transformer, has no magnetic core loss. more magnetic core loss. more copper loss. less magnetic core loss. no magnetic core loss. more magnetic core loss. more copper loss. less magnetic core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, lap winding is used in where greater load is connected. high current and low voltage applications. where constant speed is required. high voltage and low current applications. where greater load is connected. high current and low voltage applications. where constant speed is required. high voltage and low current applications. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the full form of MNP? Magnetic neutral pole. Magnetic field neutral plane. Magnetic field neutral pole. Magnetic neutral plane. Magnetic neutral pole. Magnetic field neutral plane. Magnetic field neutral pole. Magnetic neutral plane. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging of induction motor occurs at low voltage and when stator and rotor poles are equal. high voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are not equal. low voltage and when stator and rotor poles are equal. high voltage and when stator and rotor poles are equal. low voltage and when stator and rotor poles are not equal. high voltage and when stator and rotor poles are not equal. ANSWER DOWNLOAD EXAMIANS APP
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