DC Motors For constant torque drive which speed control method is preferred? Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To reduce the reluctance of the magnetic path To spread out flux for better uniformity To reduce eddy current loss To support the field coils To reduce the reluctance of the magnetic path To spread out flux for better uniformity To reduce eddy current loss To support the field coils ANSWER DOWNLOAD EXAMIANS APP
DC Motors The running speed of a dc series motor is basically determined by Load Armature reaction None of the listed here Field excitation Load Armature reaction None of the listed here Field excitation ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the armature current decreases When the field current increases By interpoles When the armature current increases When the armature current decreases When the field current increases By interpoles When the armature current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors The shaft torque in a dc motor is less than total armature torque because of ______ in the motor. Cu losses Field losses Iron and friction losses None of the listed here Cu losses Field losses Iron and friction losses None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors The plugging gives the Smallest torque braking Highest torque braking Zero torque braking None of the listed here Smallest torque braking Highest torque braking Zero torque braking None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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