Which set of valves will be opened intentionally to remove heat from the main engine jacket cooling water system shown in the illustration? Illustration MO-0111

Correct Answer: Option A — "A" and "C", "L" and "M"

To remove heat from the jacket water system, the cooling water must circulate through the heat exchanger. Valves 'A' and 'C' direct the jacket water through the cooler, while 'L' and 'M' facilitate the flow of the cooling medium, ensuring effective heat transfer from the engine to the secondary cooling system.