🔍 Key Concepts

• Identify whether the field winding is in series or parallel with the armature in each diagram • Understand the difference between series, shunt, and compound DC motors • For compound motors, distinguish between long shunt and short shunt connections

💭 Think About

• Trace the current path from the positive line terminal through the armature and field windings in figure C. Which windings does the current pass through one after another? • Ask yourself: is there any field winding connected directly across the line (in parallel with the armature), or are all the field windings in the same series path as the armature? • Compare the connection of the series field (S1–S2) in figure C with that in figure B. How does its position relative to the armature and line terminals change the motor type description?

✅ Before You Answer

• Verify whether any field winding is directly across the supply (this would be the shunt field) • Confirm whether the S1–S2 series field is in series with the armature only, or with both armature and shunt field, which distinguishes long vs short shunt • Make sure you can clearly label which winding in the diagram is the series field and which, if present, is the shunt field before choosing your answer