🔍 Key Concepts
• Study how the symbol at label B is drawn compared to the other symbols at each station (crank handle, coils, lamps, etc.).
• Recall what a selsyn (synchro) motor is used for on ships (remote indication or control) versus what a hand‑cranked generator or bridge rectifier does.
• Think about what kind of component would be repeated at multiple steering/engine stations in a telegraph or steering‑control system.
💭 Think About
• Does the symbol at B look like something that converts AC to DC, a light, a motor, or a manually operated generator? Match the drawing style to the typical schematic symbol.
• Which of the answer choices would normally appear at several remote stations tied together by many small wires, as shown in this multi‑station diagram?
• Look for any sign of a crank handle, lamp filament, or diode arrangement in the symbol and ask which option best fits what you actually see.
✅ Before You Answer
• Compare the shape and internal markings of the symbol at B with standard symbols for rectifiers, lamps, motors, and generators in your study materials.
• Verify which component from the list is commonly used in remote indicating/telegraph systems on board ships.
• Confirm whether any of the other labeled items (A, C, or D) already represent one of the remaining choices, so you don’t pick a duplicate function for B.