Question 159Steam Plants - QMED70% to pass
What statement is true concerning a propulsion steam turbine turning (jacking) gear?
AI Explanation
The correct answer is C) The jacking gear splined clutch is associated with the high pressure turbine first reduction pinion.
The jacking gear is used to manually rotate the turbine shaft when the main propulsion steam turbines are not operating. This allows the shaft to be rotated slowly for maintenance and inspection purposes. The jacking gear splined clutch connects the jacking gear to the high pressure turbine's first reduction pinion, which is the first stage of the turbine's reduction gearing system. This allows the jacking gear to engage and turn the turbine shaft when needed.
The other options are incorrect because the jacking gear clutch is not associated with the low pressure turbine's reduction gearing, nor the high pressure turbine's second reduction pinion.
Related Questions
#157 What statement concerning the operation of a propulsion steam turbine turning (jacking) gear is true? #158 The jacking gear must be engaged as quickly as possible when securing the main turbines in order to _______________.#160 Magnets are installed in the main propulsion turbine lube oil strainers to attract metal particles released through wearing of the _______________.#161 As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This condition may be avoided by _______________.#162 Which of the filter/strainer units listed permits you to clean the element while leaving the system on the line?