A dc, shunt motor is driving a constant torque load with normal excitation. If the field current is halved then the motor will run at
A. rated speed.
B. half of rated speed.
C. double of rated speed.
D. slightly less than double the rated speed.
Answer:D
A dc, shunt motor is driving a constant torque load with normal excitation. If the field current is halved then the motor will run at
A. rated speed. B. half of rated speed. C. double of rated speed. D. slightly less than double the rated speed.