Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Steam Plants (Boilers & Turbines) (Set 6)

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Question 1 of 30

An overheated bearing in the main propulsion unit is indicated by __________.

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30 MCQs

#1 An overheated bearing in the main propulsion unit is indicated by __________. #2 While making your rounds, you notice the main lube oil temperature to be higher than normal. To remedy this situation, you should __________. #3 An excessive pressure differential across a lube oil strainer could indicate __________. #4 While a vessel is underway, which of the conditions listed would indicate a leak in the lube oil cooler? #5 When a sudden increase in pressure occurs in a forced lubrication system, you should check for a __________. #6 A lube oil sample is taken from the main engine lube oil system and visually inspected. Which of the following would indicate water contamination? #7 Excessive water in an operating lube oil system can be detected by __________. #8 In a gravity type lube oil service system, if no lube oil appears in the sight glass of the return drop line while underway, this is a positive indication that __________. #9 On a ship equipped with a gravity type lube oil system, which of the conditions listed will occur FIRST if the main lube oil pump discharge pressure is lost? #10 Lube oil temperature leaving the lube oil coolers is regulated by throttling the __________. #11 The maximum temperature rise of oil passing through any reduction gear set, or bearing, should not exceed __________. #12 The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________. #13 A poorly cleaned lube oil purifier bowl may result in __________. #14 During the routine inspection of an operating centrifugal lube oil purifier, you notice oil discharging through the water discharge port. Which of the following actions should be taken? #15 A centrifugal oil purifier should be shut down if the __________. #16 In a disk type lubricating oil centrifuge __________. #17 Which of the conditions listed should be immediately reported to the engineering officer on watch? #18 Air trapped within the main condenser shell is detrimental because it will __________. #19 Serious tube leaks in the air ejector after condenser assembly may cause __________. #20 If the boiler water and condenser hot well levels are normal, but the DC heater level is only 30% of full, you should __________. #21 Vapor blowing from the air ejector condenser vent may be caused by __________. #22 Excessive water loss from the main feed system can be caused by __________. #23 Saltwater contamination of condensate could occur at which component? #24 Excessive recirculation of condensate should be avoided, as it can cause __________. #25 The usual symptoms of cavitation in a main condensate pump would be __________. #26 Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity? #27 If the condensate level in the loop seal of the air ejector inter condenser is lost, __________. #28 Which of the following actions should be taken FIRST when the boiler fires begin to sputter due to water in the fuel oil? #29 Which of the actions listed should be carried out immediately after securing the fires in one boiler of a two boiler ship? #30 Carbon deposits on the diffuser and register throat ring of a burner __________.

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