DC Motors In the dc motor the iron losses occur in Armature Commutator Field Brushes Armature Commutator Field Brushes ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They have longer life They reduce armature reaction They reduce sparking They have lower resistance They have longer life They reduce armature reaction They reduce sparking They have lower resistance ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. motor which of the following can sustain the maximum temperature rise? Commutator Field winding Slip rings Armature winding Commutator Field winding Slip rings Armature winding ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Centrifugal pumps Elevators Steel rolling mills Colliery winders Centrifugal pumps Elevators Steel rolling mills Colliery winders ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the sparking 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 ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Shunt motor Series motor Battery operated motor Air motor Shunt motor Series motor Battery operated motor Air motor ANSWER DOWNLOAD EXAMIANS APP
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