Engine : Motor Plants and Auxiliary Boilers - 980/947
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| Which of the following methods is used to lubricate main propulsion medium-speed diesel engine reduction gears? |
| A) Oil is sprayed through nozzles at the point of gear mesh. |
| B) Oil rings in channels outside the gears dip into oil in the sump and carry it to the gear teeth. |
| C) The gears run through an open oil sump and oil is carried along on the gear teeth. |
| D) Oil is pressure fed through internal drilled passages which force oil to the gear's periphery. |
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