Question 83Electricity & Electronics - Assistant Engineer

The correct answer is C) cumulatively compounded long-shunt. The wiring diagram found in figure "B" of the illustration EL-0054 represents a cumulatively compounded long-shunt DC motor. In this type of motor, the series field winding and the shunt field winding are connected in a way that their magnetic fields add together, resulting in a stronger overall field strength. The long-shunt configuration means that the series field winding is connected in series with the armature, while the shunt field winding is connected in parallel with the armature and series field. The other options are incorrect because a differentially compounded motor has the series and shunt field windings connected in a way that their magnetic fields oppose each other, and a short-shunt configuration has the shunt field winding connected in parallel with the armature only, not the series field.