Question 534Steam Plants - Assistant Engineer
70% to passMain steam turbine bearings are lined with _______________.
Aferrous oxide
Bcast-iron
CBabbitt
Dsteel
AI Explanation
The correct answer is C) Babbitt. Main steam turbine bearings are lined with Babbitt, a soft white metal alloy known for its excellent anti-friction and self-lubricating properties. Babbitt provides a smooth, wear-resistant surface that helps reduce friction and wear on the turbine shaft, improving efficiency and reliability. The other answer choices are incorrect because: A) Ferrous oxide is not a lining material used for turbine bearings. B) Cast-iron is not commonly used as a bearing lining material for steam turbines. D) Steel, while used in other components of the turbine, is not the primary lining material for the bearings.
Related Questions
Q192:If a boiler is brought on the line with its steam pressure much higher than that... Q739:If live steam is supplied directly to the tank heating coils; the collected drai... Q730:Guardian valves are installed on main propulsion turbines to _______________. Q499:Which action should be taken if the water level in the boiler gage glass drops o... Q40:When condenser tube ends are rolled into both tube sheets, the different rates o...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources