The speed of a dc shunt motor can be raised above its rated value
A. inserting an additional resistance in the armature circuit.
B. inserting an additional resistance in the field circuit.
C. reducing the applied voltage.
D. using either of the above methods.
Answer:B
The speed of a dc shunt motor can be raised above its rated value
A. inserting an additional resistance in the armature circuit. B. inserting an additional resistance in the field circuit. C. reducing the applied voltage. D. using either of the above methods.