DC Motors Which method of braking is generally used in elevators? Regenerative braking Rheostat braking None of these Plugging Regenerative braking Rheostat braking None of these Plugging ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current None of the listed here Decreases Remains same Increases None of the listed here Decreases Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ? Series motor Cumulative compound motor Shunt motor Differentially compound motor Series motor Cumulative compound motor Shunt motor Differentially compound motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Compensating winding in a dc machine is placed On armature None of the listed here On yoke in the interpolar gap On yoke in the pole faces On armature None of the listed here On yoke in the interpolar gap On yoke in the pole faces ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens Nothing will happen to motor This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will come to stop Nothing will happen to motor This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will come to stop 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 None of these Dynamic braking Regenerative Plugging None of these Dynamic braking Regenerative Plugging ANSWER DOWNLOAD EXAMIANS APP
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