Electrical Machines If the air gap of IM is increased, ____________ will increase. air gap flux. magnetizing current. power factor. speed. air gap flux. magnetizing current. power factor. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be either (B) or (C). equal to number of rotor slots. an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. either (B) or (C). equal to number of rotor slots. an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Total core loss is also called as -------------? Eddy current loss Hysteresis loss Magnetic loss Copper loss Eddy current loss Hysteresis loss Magnetic loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to high resistance of carbon brushes. presence of commutator. armature reaction. reactance voltage. high resistance of carbon brushes. presence of commutator. armature reaction. reactance voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be None of these pulsating and unidirectional steady and unidirectional oscillating None of these pulsating and unidirectional steady and unidirectional oscillating ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Crawling in an induction motor is due to insufficient starting torque. space harmonics produced by winding currents. time harmonics in supply. slip ring rotor. insufficient starting torque. space harmonics produced by winding currents. time harmonics in supply. slip ring rotor. ANSWER DOWNLOAD EXAMIANS APP
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