Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Subjects (Auxiliaries & Systems) (Set 19)
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Question 1 of 30
In a closed-loop process control system, what term is used to describe the progressive reduction or suppression of oscillation in a component?
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30 MCQs #1 In a closed-loop process control system, what term is used to describe the progressive reduction or suppression of oscillation in a component? #2 The size of ball and roller bearings can be identified by the __________. #3 Which bearing will carry the load on two small points diametrically opposite to each other? #4 Which of the listed types of bearings is an example of a half bearing? #5 When removing roller bearings from a shaft, the force of the puller should be applied to the bearing __________. #6 Packing extremely soft grease into a roller bearing will cause __________. #7 As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This condition may be avoided by __________. #8 A dented race in an antifriction bearing could be caused by __________. #9 One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the __________. #10 The emergency bilge suction valve is typically used __________. #11 Accidental flooding of the engine room bilges through the bilge system is prevented by __________. #12 The aft starboard bilge well is clogged, and back flushing has not been successful. The next practical solution would be to __________. #13 You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what action should be carried out? #14 If one of the bilge system manifold valves does not properly seat, the __________. #15 If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause? #16 If a bilge pump is able to develop vacuum, but is unable to sufficiently pump out the bilges, you would check for all of the following EXCEPT __________. #17 Where a two-stage air ejector set is used in a two-stage flash evaporator, the first-stage air ejector takes suction from the second stage of the evaporator, and the second stage air ejector __________. #18 The brine level in the second-stage of a flash-type evaporator is determined in part by the feed rate, the rate of evaporation in both stages, and the __________. #19 In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the __________. #20 Steam supply for the operation of the low pressure evaporators may be obtained directly from the __________. #21 The temperature of the steam flow to the saltwater feed heater, in a flash type evaporator can be manipulated by a/an __________. #22 The thickest deposit of scale in a flash evaporator is most likely to occur in the tubes of the __________. #23 The floating end of a shell-and-tube type cooler utilizes a packing ring to __________. #24 Scale accumulation on evaporator heat exchange surfaces __________. #25 If a higher than normal water level is observed through the inspection port of a flash evaporator, you should suspect __________. #26 Carryover in a flash type distilling plant can be a result of __________. #27 A high reading at a salinity cell located in the loop seal between two stages of a flash type evaporator would indicate __________. #28 The quantity and density of brine discharged from the last effect of a flash type evaporator should be kept at a constant value so as to __________. #29 Which of the listed problems could produce a high absolute pressure within a flash type evaporator? #30 The thickest deposit of scale in a flash evaporator is most likely to occur in the tubes of the __________.
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