Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Motor Plants & Auxiliary Boilers (Set 2)
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Question 1 of 30
What type of reduction gear would most commonly be used with twin medium-speed propulsion diesel engines driving a single shaft?
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30 MCQs #1 What type of reduction gear would most commonly be used with twin medium-speed propulsion diesel engines driving a single shaft? #2 Reduction gear casings are vented in order to __________. #3 Which of the statements represents a characteristic of the thrust collar in a Kingsbury thrust bearing? #4 What is the function of the main thrust bearing? #5 Fuel oil discharged into the diesel engine cylinder is atomized at the __________. #6 The main advantage of unit injectors over other fuel injection systems is __________. #7 Fuel injection pumps using the port and helix metering principle requires the use of a __________. #8 The amount of fuel delivered by a helical plunger fuel injection pump is controlled by __________. #9 Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging? #10 Whether using a centrifuge or a simple filter, oil cleaning and filtration will be the most effective when the oil is at a __________. #11 To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of __________. #12 For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because __________. #13 Cooling the intake air supplied to a diesel engine will __________. #14 A large, low-speed, main propulsion diesel engine uses sea water to directly cool the __________. #15 An increase in the air inlet manifold pressure of a diesel engine will result in a/an __________. #16 In a naturally aspirated diesel engine, the volume of air intake is directly associated with engine __________. #17 A naturally aspirated diesel engine at full throttle will have an intake manifold pressure __________. #18 A magnetic strainer is primarily used in diesel engine reduction gear oil systems to remove small particles of __________. #19 Which of the following statements is true concerning a main diesel engine oil cooler? #20 The lube oil cooler is located after the lube oil filter in order for __________. #21 The purpose of an oil mist detector in a main propulsion diesel engine is to warn of __________. #22 Which of the following problems could develop due to the accumulation of oil vapors in the crankcase of a diesel engine? #23 The possibility of a diesel engine crankcase explosion will be increased by operating an engine __________. #24 If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase __________. #25 Lube oil pumps taking suction from the sump of most small marine engines are usually __________. #26 Which of the routine maintenance procedures listed is required for starting air receivers? #27 Where is the air charge for an air starting system stored? #28 An accumulator used in a hydraulic starting system is generally located between the __________. #29 Auxiliary diesel engine electric starting motors use __________. #30 Diesel engine electric starting motors generally require heavier duty motors and operate at higher voltages than comparable starting motors for gasoline engines due to __________.
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