Electrical Machines A small air gap in poly phase induction motor helps to reduce chance of crawling. reduce chance of cogging. reduce magnetizing current. increase starting torque. reduce chance of crawling. reduce chance of cogging. reduce magnetizing current. increase starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If input of a transformer is square wave the output will be sine wave. pulsed wave. triangular wave. square wave. sine wave. pulsed wave. triangular wave. square wave. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be somewhat more than 230 V 6 V 230 V somewhat less than 230 V somewhat more than 230 V 6 V 230 V somewhat less than 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for reduce losses collecting of current increase efficiency convert AC armature current in to DC reduce losses collecting of current increase efficiency convert AC armature current in to DC ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be PN/120. PN/3000. PN/60. PN/2. PN/120. PN/3000. PN/60. PN/2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low current rating which winding is employed to DC machine? Wave winding None of above Both lap and wave winding Lap winding Wave winding None of above Both lap and wave winding Lap winding ANSWER DOWNLOAD EXAMIANS APP
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