Question 634Steam Plants - Assistant Engineer70% to pass
Where are moisture shields located in a main propulsion steam turbine?
AI Explanation
The correct answer is D) After the last stage of the ahead rotor blading.
Moisture shields are located after the last stage of the ahead rotor blading in a main propulsion steam turbine. This placement helps prevent water droplets from damaging the turbine blades and other internal components. The moisture shields capture and divert any condensed moisture away from the critical areas of the turbine, ensuring smooth and efficient operation.
The other options are incorrect because they do not represent the proper location of the moisture shields within the steam turbine. The steam strainer, throttle valve stems, and inner stage diaphragms are not the appropriate places for the moisture shields in a main propulsion steam turbine.
Related Questions
#632 When turbine rotor shafts extend through the casing, an external source of sealing steam is used in conjunction with labyrinth packing to _______________.#633 The labyrinth seals used on rotating steam turbine shafts reduces external leakage by causing _______________.#635 The astern element of a main propulsion turbine is usually designed as a/an _______________.#636 If the main and standby lube oil service pumps of the main engine fail while underway at sea, _______________.#637 In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from the main sump and discharge directly to the _______________.