DC Motors A dc series motor is most suitable for Pump Punch presses Lathes Cranes Pump Punch presses Lathes Cranes ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 2.0 4.0 1.0 0.5 2.0 4.0 1.0 0.5 ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Armature current Flux Field and armature resistance Speed Armature current Flux Field and armature resistance Speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost Low efficiency at high loads High initial cost All of these High maintenance cost Low efficiency at high loads High initial cost All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Steel rolling mills Colliery winders Centrifugal pumps Elevators Steel rolling mills Colliery winders Centrifugal pumps Elevators 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 reduce the reluctance of the magnetic path To spread out flux for better uniformity To reduce eddy current loss To support the field coils To reduce the reluctance of the magnetic path To spread out flux for better uniformity To reduce eddy current loss ANSWER DOWNLOAD EXAMIANS APP
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