DC Motors If a dc motor is comnected across the AC supply it will Not run Burn due to heat produced in the field winding by eddy currents Run at normal speed Run at lower speed Not run Burn due to heat produced in the field winding by eddy currents Run at normal speed Run at lower speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing Armature circuit resistance All of the listed here Is flux Aplied voltage Armature circuit resistance All of the listed here Is flux Aplied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Starting torque All of these Operating speed Full-load current Starting torque All of these Operating speed Full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor is generally preferred for cranes and hoists? Cumulatively compounded motor Differentially compounded motor Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor Series motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is most suitable for Pump Cranes Punch presses Lathes Pump Cranes Punch presses Lathes 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 reduce eddy current loss To spread out flux for better uniformity To support the field coils To reduce the reluctance of the magnetic path To reduce eddy current loss To spread out flux for better uniformity To support the field coils ANSWER DOWNLOAD EXAMIANS APP
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