DC Motors In the dc motor the iron losses occur in Armature Field Brushes Commutator Armature Field Brushes Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? Regenerative braking None of the listed here Rheostatic braking Plugging Regenerative braking None of the listed here Rheostatic braking Plugging ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the sparking To improve cooling To reduce the generated emf To increase the generated emf To reduce the sparking To improve cooling To reduce the generated emf To increase the generated emf ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the field current increases When the armature current increases When the armature current decreases By interpoles When the field current increases When the armature current increases When the armature current decreases By interpoles ANSWER DOWNLOAD EXAMIANS APP
DC Motors For starting a dc motor a starter is required because It limits the starting current to a safe value None of the listed here It starts the motor It limits the speed of the motor It limits the starting current to a safe value None of the listed here It starts the motor It limits the speed of the motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing Is flux All of the listed here Aplied voltage Armature circuit resistance Is flux All of the listed here Aplied voltage Armature circuit resistance ANSWER DOWNLOAD EXAMIANS APP
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