DC Motors At the instant of starting when a D.C. motor is put on supply, it behaves like None of these A capacitive circuit A highly resistive circuit A low resistance circuit None of these A capacitive circuit A highly resistive circuit A low resistance circuit ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To support the field coils To reduce eddy current loss To spread out flux for better uniformity To reduce the reluctance of the magnetic path To support the field coils To reduce eddy current loss To spread out flux for better uniformity To reduce the reluctance of the magnetic path ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is most suitable for Punch presses Pump Lathes Cranes Punch presses Pump Lathes Cranes ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? Plugging None of the listed here Regenerative braking Rheostatic braking Plugging None of the listed here Regenerative braking Rheostatic braking 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 high value resistor is connected across the field winding A resistance is connected parallel to the armature Armature is temporarily open circuited A resistance is connected in series with armature A high value resistor is connected across the field winding A resistance is connected parallel to the armature Armature is temporarily open circuited A resistance is connected in series with armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thyratron Thermistor Transistor Thyristor Thyratron Thermistor Transistor Thyristor ANSWER DOWNLOAD EXAMIANS APP
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