An overhead transformer has __________ for its primary source of feed (energization).

• A. Overhead conductor
• B. Underground conductor
• C. Submarine cable
• D. Fiber optic cable

Answer: (A)

The key idea is how a transformer's primary gets energized in a distribution setup. An overhead transformer is fed by an overhead conductor—the live line from the distribution network mounted on utility poles. This matches the usual arrangement where transformers sit along the line and receive energy directly from the overhead feeder. Underground conductors would be used for buried distribution, submarine cables for underwater routes, and fiber optic cables carry primarily communications signals, not the power needed to energize the transformer. So the overhead conductor best fits as the primary feed.