Question 429Steam Plants - Assistant Engineer
70% to passWhich color burner flame would indicate too much excess air?
AYellowish orange
BIncandescent white
COrange red
DBright red
AI Explanation
The correct answer is B) Incandescent white. An incandescent white flame indicates too much excess air in the fuel-air mixture. This is because excess air causes the flame to burn hotter, resulting in a whiter, more incandescent appearance. The other options, such as yellowish orange, orange red, and bright red, would indicate a more optimal fuel-air ratio with less excess air. This knowledge is important for Coast Guard Captain's License Examinations, as understanding proper fuel-air mixture and flame characteristics is crucial for the safe operation and maintenance of marine engines and equipment.
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