A cumulatively compounded long shunt motor is driving a load at rated torque and rated speed. If the series field is shunted by a resistance equal to the resistance of the series field, keeping the torque constant
A. the armature current increases.
B. the motor speed increases.
C. the armature current decreases.
D. the motor speed decreases.
Answer:A
A cumulatively compounded long shunt motor is driving a load at rated torque and rated speed. If the series field is shunted by a resistance equal to the resistance of the series field, keeping the torque constant
A. the armature current increases. B. the motor speed increases. C. the armature current decreases. D. the motor speed decreases.