What statement is true concerning steam-heated, hot-water heated, or electric- heated convectors?

Correct Answer: Option C — Convectors draw in relatively cool air through an opening at the bottom and discharge relatively warm air through an outlet grille at the top and are located on bulkheads near the deck.

Convectors operate on the principle of natural convection. Cool air enters through a bottom opening, is heated by the internal element, becomes less dense, and rises, discharging through the top grille. Placing these units on bulkheads near the deck optimizes air circulation by drawing in the coldest air from the floor.