Electrical Machines The compensating winding in a DC machine is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. is located on commutating poles for improving commutation. is located on pole shoes to avoid the sparking at the brushes. is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. is located on commutating poles for improving commutation. is located on pole shoes to avoid the sparking at the brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are nullify reactance voltage and improve the commutation. both 1 and 2 None of these reduce cross magnetization effect and improve commutation nullify reactance voltage and improve the commutation. both 1 and 2 None of these reduce cross magnetization effect and improve commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to high field resistance. high speed. residual flux. magnetic inertia. high field resistance. high speed. residual flux. magnetic inertia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 48.5Hz 2.5Hz 51.5Hz 1.5Hz 48.5Hz 2.5Hz 51.5Hz 1.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for convert AC armature current in to DC collecting of current increase efficiency reduce losses convert AC armature current in to DC collecting of current increase efficiency reduce losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following are variable losses? shunt field copper loss armature copper loss hysteresis loss eddy current loss shunt field copper loss armature copper loss hysteresis loss eddy current loss ANSWER DOWNLOAD EXAMIANS APP
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