Electrical Machines The armature of a DC motor is laminated to reduce copper loss. hysteresis loss. eddy current loss. friction and windage loss. copper loss. hysteresis loss. eddy current loss. friction and windage loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be rough commutator surface. imperfect contact. any of above. severe sparking. rough commutator surface. imperfect contact. any of above. severe sparking. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, electric current to the external circuit from armature is given through commutator. slip rings. none of above. solid connection. commutator. slip rings. none of above. solid connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Drop in speed from no load to full load is very high in Series motor with interpoles. Series motor without interpoles. Shunt motor with interpoles. Cummulative compound motor with interpoles. Series motor with interpoles. Series motor without interpoles. Shunt motor with interpoles. Cummulative compound motor with interpoles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors uses slip rings? Synchronous motors Both Synchronous and Induction motor DC Shunt Motor Induction motors Synchronous motors Both Synchronous and Induction motor DC Shunt Motor Induction motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Saving of copper in auto transformer is increased as compared to two winding transformer, when transformation ratio K approaches to zero. two. unity. infinity. zero. two. unity. infinity. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS