🔍 Key Concepts

• Synchro system components: rotor vs stator and what each one does • How three-phase-like synchro voltages represent angle information • Difference between where power is supplied and where position data is carried

💭 Think About

• In a basic synchro transmitter, which winding actually changes its electrical relationship with mechanical angle—the rotor or the stator? • If the rotor is excited with an AC voltage, where do the resulting angle‑dependent voltages appear? • Think about which part is usually common between the transmitter and receiver, and which part must carry the variable information so the receiver can follow the transmitter angle.

✅ Before You Answer

• Identify which winding (rotor or stator) is excited with a constant AC voltage in a basic synchro • Identify which winding has three leads whose voltages vary with shaft position • Eliminate options that clearly belong to other systems (for example, CRT deflection or pure DC control) rather than classic synchro position transmitters