Question 68Gas Turbine - 1st Asst/Chief
70% to passA reddish-colored oxide usually forms on which of the following metals?
AAluminum.
BSteel.
CChromium.
DMagnesium.
AI Explanation
The correct answer is B) Steel. The reddish-colored oxide that forms on metal is known as rust, and it is a common occurrence on steel surfaces. This is due to the chemical reaction between iron (the primary component of steel) and oxygen in the presence of moisture, which leads to the formation of iron oxide, or rust. The other options are incorrect because aluminum forms a thin, protective oxide layer that is not reddish in color, chromium is resistant to corrosion and does not form a reddish oxide, and magnesium forms a white or gray oxide rather than a reddish one.
Related Questions
Q87:The Main Fuel Control module used on a marine gas turbine engine as shown in the... Q54:What action should you take if full power vibration limits are exceeded on a gas... Q41:The power turbine (PT) of the GE LM2500 gas turbine engine has a total of how ma... Q29:On a ship with a marine gas turbine as shown in the illustration, a fire emergen... Q105:Which of the following is the most probable cause for the sump oil to be excessi...
Ready to test your knowledge?
Take a Gas Turbine - 1st Asst/Chief Practice ExamOfficial Resources