Question 255Electricity & Electronics - QMED

The correct answer is D) constant potential, variable current DC sources. This is because the design of shunt wound, series wound, and compound-wound DC motors determines their behavior with respect to voltage potential and current sources. Shunt wound motors operate on a constant potential (voltage) DC source, while the current through the motor windings can vary. Series wound motors also operate on a constant potential DC source, but the current through the windings varies based on the load. Compound-wound motors are a combination of shunt and series windings, also operating on a constant potential DC source with variable current. The other options are incorrect because variable potential sources (A and C) do not accurately describe the operation of these DC motor types, and constant current sources (B) are not the typical power source for these motors.