A dc shunt motor is driving a mechanical load at rated voltage with normal excitation. If the load torque is increased to double of the normal one, the speed of the motor will
A. become half.
B. become double.
C. increase slightly.
D. fall slightly.
Answer:D
A dc shunt motor is driving a mechanical load at rated voltage with normal excitation. If the load torque is increased to double of the normal one, the speed of the motor will
A. become half. B. become double. C. increase slightly. D. fall slightly.