DC Motors Which of the following methods gives the greatest braking torque? Regenerative braking Rheostatic braking None of the listed here Plugging Regenerative braking Rheostatic braking None of the listed here Plugging ANSWER DOWNLOAD EXAMIANS APP
DC Motors As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit A resistance is connected in series with armature Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected parallel to the armature A resistance is connected in series with armature Armature is temporarily open circuited A high value resistor is connected across the field winding A resistance is connected parallel to the armature 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 A dc motor is still used in industrial applications because it Is cheap None of the listed here Provides fine speed control Is simple in construction Is cheap None of the listed here Provides fine speed control Is simple in construction ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 8 poles 4 poles 2 poles 6 poles 8 poles 4 poles 2 poles 6 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Field copper loss Windage loss Armature copper loss None of these Field copper loss Windage loss Armature copper loss None of these ANSWER DOWNLOAD EXAMIANS APP
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