Electrical Machines Cogging of induction motor occurs at high voltage and when stator and rotor poles are equal. low 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. high voltage and when stator and rotor poles are equal. low 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
Electrical Machines Slip speed is the half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. sum of synchronous and rotor speeds. half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. sum of synchronous and rotor speeds. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 8. 6. 2. 4. 8. 6. 2. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eddy current loss will depends on Thickness Frequency All of these Flux density Thickness Frequency All of these Flux density ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fufuraldehyde analysis is done to determine the condition of oil in transformer. condition of lamination on CRGO steel sheet. condition of paper insulation in transformer. condition of cork gaskets used in transformer. condition of oil in transformer. condition of lamination on CRGO steel sheet. condition of paper insulation in transformer. condition of cork gaskets used in transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test on induction motor is conducted to find which of the following losses? Rotational loss All of these Stator copper loss Stator core loss Rotational loss All of these Stator copper loss Stator core loss ANSWER DOWNLOAD EXAMIANS APP
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