Question 589Steam Plants - Assistant Engineer
70% to passIn securing the main turbines, steam to the second stage air ejectors should be left on for a short period of time in order to _______________.
Ainsure equal cooling of the main turbine bearings
Bprevent excessive condensate depression
Cremove the excessive amount of non-condensable vapors which accumulated during maneuvering operations
Ddry out the main turbines
AI Explanation
The correct answer is D) dry out the main turbines. When securing the main turbines, leaving the steam to the second stage air ejectors on for a short period of time helps to dry out the main turbines. This prevents condensation from building up inside the turbines, which could lead to corrosion and damage if left unchecked. The other answer choices are incorrect because: A) Ensuring equal cooling of the main turbine bearings is not the primary reason for leaving the steam to the air ejectors on. B) Preventing excessive condensate depression is not the main purpose in this scenario. C) Removing non-condensable vapors is not the main objective when securing the turbines.
Related Questions
Q530:Which of the journal bearings listed most easily accommodates the minor turbine ... Q250:Steam tables can be used to obtain the _______________. Q516:Reduction gears for main propulsion turbines are lubricated by _______________. Q72:The useful life of furnace refractory is affected most by _______________. Q532:The adjustable spherically seated self-aligning bearing housings used in main t...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources