Engine 2014: Steam Plants

1. A lubricating oil from the high-speed pinion can easily supply the turning gears
2. B turning gears are double reduction worm type and cannot mate with the low pressure high-speed pinion
3. C arrangement allows for the use of a muff type coupling for  flexibility and smooth engagement
4. D greatest gear ratio between the turning gear motor output and bull gear can be obtained

Tip: press A-D to answer