Pass Benchmark: 70% • Standard: USCG NMC / 46 CFR

USCG Engine General (Supplementary) (Set 10)

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Question 1 of 30

What is the function of device "B" shown in the illustration? MO-0110

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30 MCQs

#1 What is the function of device "B" shown in the illustration? MO-0110 #2 What is the function of device 'C' shown in the illustration? MO-0110 #3 What is the function of item 'D' shown in the illustration? MO-0110 #4 For the successful operation of a reverse-osmosis freshwater generator, the setting of the brine back pressure regulator is critical. What statement regarding the set point of this regulator is true? #5 If a reverse-osmosis freshwater generating unit has a high salinity alarm associated with the freshwater outlet, what should be done? #6 What is the BEST indication that the pre-treatment filter (or filters) of a reverse- osmosis freshwater generator must be serviced by cleaning or replacement? #7 What component of a reverse-osmosis freshwater generator could be isolated and replaced with the unit remaining in service? #8 What is the BEST indication that the membrane modules of a reverse-osmosis freshwater generator must be serviced by flushing or cleaning? #9 Under what conditions would the pre-treatment capabilities of a reverse-osmosis freshwater generator MOST likely be overloaded, and as a result, these conditions should generally be avoided? #10 What is the BEST indication that the membrane module is damaged and is no longer semi-permeable and allowing the solute to pass through? #11 When a reverse-osmosis freshwater generator is shutdown, what must be accomplished? #12 Failure to establish sufficient vacuum when starting up the unit shown in the illustration may be the result of __________. MO-0110 #13 Which of the following conditions can cause high salinity of the distillate due to sea water leakage in the illustrated device. MO-0110 #14 When tightening the plate type heat exchangers shown in the illustration, care must be taken to __________. MO-0110 #15 Which of the freshwater generators listed below is operated without a source of heat? #16 Which of the following freshwater generators has an operating principle that requires it to run under a substantially positive pressure? #17 In which of the following freshwater generators would an air ejector be unnecessary? #18 Which of the freshwater generators listed below requires a source of heat and evaporates sea water at a location other than a heat exchanger surface? #19 Other than taking a scale thickness through a zinc plug opening of the water box of a feed water heater of a flash evaporator, what would be the BEST indication for a need to remove scale build-up? #20 Device '27' shown in the illustration is used to __________. Illustration MO-0111 #21 What occurs within the tubes of the device labeled "23" shown in the illustration? Illustration MO-0111 #22 The operation of the lube oil cooler, shown in the illustration as item #4, will be characterized by which of the following statements? Illustration MO-0111 #23 What is a function of the device labeled "1" shown in the illustration? MO-0111 #24 What is the function of the device labeled "3" shown in the illustration? Illustration MO-0111 #25 What are the operating characteristics of a "waterlogged" potable water system hydro pneumatic header tank that needs to be recharged with compressed air? #26 Suppose a prime mover rotates at a steady speed of 900 rpm at rated full load and rotates at a steady speed of 1000 rpm at no load. Assuming that no adjustments have been made to the governor speed control setting, what is the speed regulation of the prime mover expressed in per cent? #27 Concerning governor speed-droop, what statement is true? #28 Which term represents the how rapidly a speed control governor will complete a corrective action as the result of a load change? #29 What is meant by the term "hunting" as it applies to prime mover speed control governors? #30 What is statement is true concerning the term "isochronous" as it applies to prime mover speed control governors?

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