DC Motors In dc machines fractional pitch winding is used To increase the generated emf To reduce the sparking To reduce the generated emf To improve cooling To increase the generated emf To reduce the sparking To reduce the generated emf To improve cooling ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The load is increase Load is removed The armature circuit is opened. The field is opened The load is increase Load is removed The armature circuit is opened. The field is opened ANSWER DOWNLOAD EXAMIANS APP
DC Motors The rheostatic speed control method is very Economical Unsuitable for rapidly changing loads Suitable for getting speeds above the normal Efficient Economical Unsuitable for rapidly changing loads Suitable for getting speeds above the normal Efficient ANSWER DOWNLOAD EXAMIANS APP
DC Motors A compensating winding is an auxiliary winding embedded in slots in The armature Partly in pole faces, partly in armature The pole faces of main poles None of the listed here The armature Partly in pole faces, partly in armature The pole faces of main poles None of the listed here 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
DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Commutator Stator Shaft Frame Commutator Stator Shaft Frame ANSWER DOWNLOAD EXAMIANS APP
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