DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Stator Frame Shaft Commutator Stator Frame Shaft Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors In the dc motor the iron losses occur in Brushes Armature Field Commutator Brushes Armature Field Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the generated emf To increase the generated emf To improve cooling To reduce the sparking To reduce the generated emf To increase the generated emf To improve cooling To reduce the sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 50% of the previous value 100% of the previous value 10% of the previous value 25% of the previous value 50% of the previous value 100% of the previous value 10% of the previous value 25% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is 8.85% 4.76% 2.22% 6.77% 8.85% 4.76% 2.22% 6.77% ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased By interpoles When the armature current decreases When the field current increases When the armature current increases By interpoles When the armature current decreases When the field current increases When the armature current increases ANSWER DOWNLOAD EXAMIANS APP
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