DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will stop The motor will continue to run The armature may burn The motor will run noisy The motor will stop The motor will continue to run The armature may burn The motor will run noisy ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating winding is basically used in a dc machine To control the speed of machine To reduce armature reaction None of the listed here To improve commutation To control the speed of machine To reduce armature reaction None of the listed here To improve commutation ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is that which Has its field winding consisting of thick wire and less turns Has almost constant speed Can be started easily without load Has a poor torque Has its field winding consisting of thick wire and less turns Has almost constant speed Can be started easily without load Has a poor torque ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Centrifugal pumps Steel rolling mills Elevators Colliery winders Centrifugal pumps Steel rolling mills Elevators Colliery winders ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current None of the listed here Decreases Remains same Increases None of the listed here Decreases Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 2 poles 6 poles 8 poles 4 poles 2 poles 6 poles 8 poles 4 poles ANSWER DOWNLOAD EXAMIANS APP
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