The magnitude of field flux in a 3-phase synchronous motor A) Varies with power factor B) Varies with speed C) Varies with the load D) Remains constant at all loads Related MCQs: When the field of a synchronous motor is under-excited, the power factor will be If in a synchronous motor, driving mechanical load and drawing current at lagging power factor from the constant voltage supply, its field excitation is increased, then its power factor One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven For V-curves for a synchronous motor, the graph is drawn between