Which component is used to carry electrical power along the transmission network?

• A. Buses
• B. Transmission lines
• C. Substations
• D. Switchyards

Answer: (B)

Transmission lines are the components that move electrical power across the network. They’re the actual conductors—overhead lines on towers or underground cables—that span between generation sites, substations, and load centers, carrying high-voltage power over long distances with minimal losses. Buses sit inside substations as common connection points for equipment, not as the long-distance pathway. Substations and switchyards are important for transforming voltage and routing or switching connections, but the energy travels along the lines between these points. So the transmission lines are the path that carries power across the transmission network.