DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Cu losses None of the listed here Iron and friction losses Field losses Cu losses None of the listed here Iron and friction losses Field losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Increase speed Reduce sparking Produce flat characteristics Decrease speed Increase speed Reduce sparking Produce flat characteristics Decrease speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Copper loss Windage loss Core loss Friction loss Copper loss Windage loss Core loss Friction loss 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 a dc motor constant torque is produced due to Pole shoes Commutator End plates Rotor laminations Pole shoes Commutator End plates Rotor laminations ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current None of the listed here Remains same Increases Decreases None of the listed here Remains same Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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