DC Motors Which method of braking is generally used in elevators? Plugging Rheostat braking Regenerative braking None of these Plugging Rheostat braking Regenerative braking None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Windage loss None of these Armature copper loss Field copper loss Windage loss None of these Armature copper loss Field copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc compound machine, Series field winding plays dominant role Either can play dominant role Shunt field winding plays dominant role Both play equally dominant role Series field winding plays dominant role Either can play dominant role Shunt field winding plays dominant role Both play equally dominant role ANSWER DOWNLOAD EXAMIANS APP
DC Motors By putting controller resistance in series with the armature of a dc motor, we can obtain speeds Above as well as below the normal speed None of the listed here Below the normal speed only Above the normal speed only Above as well as below the normal speed None of the listed here Below the normal speed only Above the normal speed only ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Core loss Windage loss Friction loss Copper loss Core loss Windage loss Friction loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To support the field coils To spread out flux for better uniformity To reduce eddy current loss To reduce the reluctance of the magnetic path To support the field coils To spread out flux for better uniformity To reduce eddy current loss To reduce the reluctance of the magnetic path ANSWER DOWNLOAD EXAMIANS APP
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