Question 339Steam Plants - 1st Asst/Chief70% to pass
The main propulsion turbine can be damaged by _______________.
AI Explanation
The correct answer is B) water carryover from the boilers.
The main propulsion turbine can be damaged by water carryover from the boilers. If water enters the turbine, it can cause severe damage to the blades and other internal components. Water carryover can occur if the boiler is not properly maintained or if there is a problem with the boiler water level control system.
The other options are incorrect because: A) maintaining vacuum too high would not directly damage the turbine, C) operating at slow speeds is generally not an issue for turbines, and D) using the jacking gear with no vacuum would not cause turbine damage.
Related Questions
#337 When a turbine bearing shows signs of overheating, you should _______________.#338 The original bridge gage reading for a reduction gear bearing was measured as .008 inches. A year later, the bridge gage reading for the same bearing is .010 inches. This indicates _______________.#340 If steam is admitted to the main propulsion turbine with the jacking gear engaged, which of the following problems can occur? #341 The part shown in the illustration would be located between which of the following components of a modern geared turbine main propulsion unit? Illustration SE-0001 #342 Which of the following statements is true concerning the coupling shown in the illustration? Illustration SE-0001