🔍 Key Concepts

• Study how basic switch symbols are drawn (single-pole, double-throw, maintained vs momentary). • Review what an overload relay contact symbol looks like on motor-control diagrams. • Notice the dashed/angled line attached to the contact in figure "6" and think about what that usually indicates on schematics.

💭 Think About

• Does figure "6" look like a physical plug or connector, or does it match the style of a schematic contact symbol? • Is the device in figure "6" drawn as something that changes state between two discrete positions, or something that varies continuously like an analog control? • How would a symbol for a simple SPDT (either/or) switch normally be drawn—does figure "6" match that layout?

✅ Before You Answer

• Compare figure 6 to the other contact symbols (figures 1–5, 7–8) and decide what is unique about 6. • Ask whether an overload relay contact is usually shown as normally closed or normally open, and whether the added marking in 6 is consistent with that. • Eliminate any option that describes a physical device shape rather than a schematic symbol style like the one in 6.