Final answer:
In a synchronous motor, an increase in DC amperage used for the field windings does not directly affect the AC amperage, as they are separate. The correct answer is B) It has no effect on amperage because they are separate. The AC amperage is influenced by the motor's load and speed.
Step-by-step explanation:
When discussing the behavior of a synchronous motor in terms of amperage, it's important to clarify the relationship between DC (direct current) amperage and AC (alternating current) amperage. In a synchronous motor, an increase in DC amperage used to energize the field windings typically results in a stronger magnetic field within the motor. This stronger magnetic field can, in turn, allow the motor to handle more mechanical load before the AC amperage increases. In the absence of a change in mechanical load, an increase in DC amperage could lead to an increase in the AC amperage if the motor is trying to do more work, such as driving a heavier load. However, because the question abstract lacks context on load conditions and implies a static scenario, the correct answer would be B) It has no effect on amperage because they are separate. The AC amperage is dependent on the motor's load and speed, not directly on the field current (DC amperage).