Question 604Steam Plants - Assistant Engineer
70% to passWater retained in the lube oil system of a main propulsion turbine installation is undesirable because it _______________.
Acauses pitting of the gear teeth
Braises the flash point of the oil to a dangerously high level
Ccauses the turbine to over speed
Dresults in excessive cooling of bearing surfaces
AI Explanation
The correct answer is A) causes pitting of the gear teeth. Water retained in the lube oil system of a main propulsion turbine installation is undesirable because it can cause pitting of the gear teeth. This is due to the corrosive nature of water, which can degrade the lubricating properties of the oil and lead to increased wear and damage to the gear teeth. The other answer choices are incorrect because: B) raising the flash point would not be an issue, C) water in the oil would not cause the turbine to overspeed, and D) excessive cooling of bearing surfaces is not a concern caused by water in the lube oil system.
Related Questions
Q423:Which of the listed methods can be used to blow down a boiler without securing t... Q153:The amount of oil atomized by a straight mechanical fuel oil burner depends on t... Q138:Which of the listed conditions will always result in dissolved oxygen being carr... Q116:Fuel oil is transferred to the settling tanks for _______________. Q76:The feed water heater shown in the illustration was designed to maintain the req...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources