Refer to the simplified schematic of the various types of self-excited DC generators shown in the illustration. What is the configuration of figure "B"? Illustration EL-0153
β’ Short-shunt vs long-shunt connections in compound DC generators β’ Difference between cumulative compounding and differential compounding (how series and shunt fields add or oppose each other) β’ How the series field winding is connected relative to the armature and shunt field in each configuration
β’ Look closely at where the shunt field is connected: is it directly across the armature only, or across both armature and series field? β’ Trace the direction of current in the series and shunt field windings: do their magnetizing effects add together or oppose each other? β’ Based on the diagram, would an increase in load current tend to increase or decrease the main field strength?
β’ Confirm whether the shunt field is connected across the armature only (short-shunt) or across both the armature and series field (long-shunt). β’ Verify whether the series and shunt field polarities are aiding (cumulative) or opposing (differential). β’ Double-check that your chosen option matches both the compounding type (cumulative/differential) and the shunt type (short/long).
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