DC Motors Which of the following in a dc motor, can sustain the maximum temperature rise? Commutator Slip rings Field winding Armature winding Commutator Slip rings Field winding Armature winding ANSWER DOWNLOAD EXAMIANS APP
DC Motors The dirction of rotation of a dc series motor can be changed by None of the listed here Interchanging supply terminals Interchanging field terminals Either of Interchanging field or Interchanging supply None of the listed here Interchanging supply terminals Interchanging field terminals Either of Interchanging field or Interchanging supply ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The field is opened The armature circuit is opened. Load is removed The load is increase The field is opened The armature circuit is opened. Load is removed The load is increase ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? C. series motor C. shunt motor Induction motor Reluctance motor C. series motor C. shunt motor Induction motor Reluctance motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing Is flux Armature circuit resistance All of the listed here Aplied voltage Is flux Armature circuit resistance All of the listed here Aplied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Decrease Increase Become zero Remains same Decrease Increase Become zero Remains same ANSWER DOWNLOAD EXAMIANS APP