Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as air gap. crawling. relative speed. cogging. air gap. crawling. relative speed. cogging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following DC Motor the ratio of starting torque to full load torque is minimum? Differential compound motor. Shunt motor. Series motor. Cumulative compound motor. Differential compound motor. Shunt motor. Series motor. Cumulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of slip ring induction motor. stepper motor. hysteresis motor. squirrel cage induction motor. slip ring induction motor. stepper motor. hysteresis motor. squirrel cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Star - delta method of starting of motor is not possible in case of low horse power motor. high torque motor. high speed motor. single phase induction motor. low horse power motor. high torque motor. high speed motor. single phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage if it has lost residual magnetism. due to wrong direction of rotation. any one of above. if field resistance is more than critical resistance. if it has lost residual magnetism. due to wrong direction of rotation. any one of above. if field resistance is more than critical resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. ANSWER DOWNLOAD EXAMIANS APP
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