DC Motors In the dc motor the iron losses occur in Armature Brushes Field Commutator Armature Brushes Field Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Differentially compounded motor Cummulative compounded motor Shunt motor Series motor Differentially compounded motor Cummulative compounded motor Shunt motor Series motor 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 Plugging Dynamic braking Regenerative None of these Plugging Dynamic braking Regenerative None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 15 HP Upto 5 HP Upto 20 HP Upto 10 HP Upto 15 HP Upto 5 HP Upto 20 HP Upto 10 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The armature circuit is opened. Load is removed The field is opened The load is increase The armature circuit is opened. Load is removed The field is opened The load is increase ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost All of these High initial cost Low efficiency at high loads High maintenance cost All of these High initial cost Low efficiency at high loads ANSWER DOWNLOAD EXAMIANS APP
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