Question 574Steam Plants - Assistant Engineer

The correct answer is B) reset the over speed trip. The handle labeled "B" in the illustration of a typical ship service turbo-generator control system is used to reset the over speed trip. The over speed trip is a safety mechanism that automatically shuts down the turbo-generator if it exceeds a safe operating speed. Resetting this trip allows the operator to restart the turbo-generator after an over speed event. The other answer choices are incorrect because they do not accurately describe the function of the "B" handle. Pumping up the lube oil manifold, bypassing the governor control, and rolling over the high-speed pinion are not the primary purposes of this particular control on the turbo-generator system.