Question 343Steam Plants - 1st Asst/Chief70% to pass
Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between the main turbine rotor and the reduction gear?
AI Explanation
The correct answer is B) Gear-type flexible coupling.
A gear-type flexible coupling is commonly used to compensate for the expansion and minor misalignments that can occur between the main turbine rotor and the reduction gear. This type of coupling allows for some degree of flexibility and movement between the two components, preventing potential issues that could arise from the thermal expansion and minor misalignments that may happen during operation.
The other options are not the correct answer. Expansion gear is not a term commonly used in this context, quill shaft is a type of shaft design not specifically used for this purpose, and a sliding sleeve is not the typical device used to address the expansion and misalignment concerns between the turbine and reduction gear.
Related Questions
#341 The part shown in the illustration would be located between which of the following components of a modern geared turbine main propulsion unit? Illustration SE-0001 #342 Which of the following statements is true concerning the coupling shown in the illustration? Illustration SE-0001 #344 To prevent damage to the turning gear mechanism, which of the following procedures must be carried out before the turning gear is engaged? #345 In securing the main turbines, steam to the second stage air ejectors should be left on for a short period of time in order to _______________.#346 After properly lining up the main propulsion turbine for warm up, steam should first be admitted to the rotor through the _______________.