For V-curves for a synchronous motor, the graph is drawn between A) Armature current and power factor B) Terminal voltage and load factor C) Power factor and field current D) Field current and armature current Related MCQs: One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven 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 Which of the following losses in a synchronous motor does not vary with load