DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 4.0 1.0 0.5 2.0 4.0 1.0 0.5 2.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking Regenerative Dynamic braking Plugging None of these Regenerative Dynamic braking Plugging None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current Decreases Remains same None of the listed here Increases Decreases Remains same None of the listed here Increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor can be easily identified by Winding Commutator Yoke Size of conductor Winding Commutator Yoke Size of conductor ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To increase the generated emf To improve cooling To reduce the generated emf To reduce the sparking To increase the generated emf To improve cooling To reduce the generated emf To reduce the sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Windage loss Field copper loss Armature copper loss None of these Windage loss Field copper loss Armature copper loss None of these ANSWER DOWNLOAD EXAMIANS APP
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