Question 40Motor Plants - QMED

The correct answer is B) gas temperature. The maximum pressure developed by a waste heat boiler is determined by the temperature of the main engine exhaust gas. As the hot exhaust gas passes through the boiler, the heat is transferred to the water or steam within the boiler, causing it to vaporize and increase in pressure. The higher the temperature of the exhaust gas, the more heat can be absorbed by the boiler, leading to a higher steam pressure. The other options are incorrect because the gas composition, pressure, and timing of the exhaust are not the primary factors that determine the maximum pressure developed by the waste heat boiler. The temperature of the exhaust gas is the key parameter that influences the boiler's pressure output.