Electrical Machines In a dc machine 72 number of coils are used. Find the number of commutator segments required? 72 36 37 74 72 36 37 74 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Split phase IM. Shaded pole IM. Cage induction motor. Synchronous motors. Split phase IM. Shaded pole IM. Cage induction motor. Synchronous motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by low voltage supply high loads improper design of stator laminations harmonics developed in the motor low voltage supply high loads improper design of stator laminations harmonics developed in the motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings are used in DC generators to neutralize the cross magnetizing effect of the armature reaction. None of these mainly to reduce the eddy currents by providing local short circuit. to provide path for the circulation of cooling air. to neutralize the cross magnetizing effect of the armature reaction. None of these mainly to reduce the eddy currents by providing local short circuit. to provide path for the circulation of cooling air. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor may be unbalanced due to overload. overheating of winding. poor lubrication. uneven air gap. overload. overheating of winding. poor lubrication. uneven air gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. ANSWER DOWNLOAD EXAMIANS APP
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