Question 367Steam Plants - 1st Asst/Chief70% to pass
Which of the devices listed is generally used to engage the main engine turning gear to the high pressure turbine high-speed pinion?
AI Explanation
The correct answer is D) Manually operated sliding jaw clutch.
The manually operated sliding jaw clutch is generally used to engage the main engine turning gear to the high pressure turbine high-speed pinion. This type of clutch allows the main engine to be mechanically coupled to the high-speed turbine shaft, enabling the main engine to be used to slowly rotate the turbine shaft for maintenance and pre-start operations.
The other options are incorrect because: A) A manually operated band brake is used to hold the main engine or reduction gears in place, not to engage the turning gear. B) A quill shaft is a type of flexible coupling, not a device used to engage the turning gear. C) A sleeve coupling is used to connect two shaft sections, not to engage the turning gear.
Related Questions
#365 The jacking/turning gear mechanism of a main propulsion geared turbine installation is normally connected through mechanical linkage to the _______________.#366 The main propulsion shaft turning gear usually connects to the free end of the high-speed high pressure pinion because the _______________.#368 The jacking gear on main propulsion turbines can be used to _______________.#369 Allowance for axial expansion of the steam turbine due to temperature changes is provided for by the use of _______________.#370 An efficient seal is normally obtained between the upper and lower halves of a turbine casing by _______________.