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

USCG Motor Plants & Auxiliary Boilers (Set 4)

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Question 1 of 30

How is the illustrated strainer element cleaned during engine operation? Illustration MO-0057

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30 MCQs

#1 How is the illustrated strainer element cleaned during engine operation? Illustration MO-0057 #2 In a normally operating diesel engine, the main source of lubricating oil contamination in the crankcase is a result of the __________. #3 A dirty diesel engine oil filter element can best be detected by __________. #4 A dirty lube oil strainer can result in __________. #5 Scale and dirt accumulation in the waterside of a lube oil cooler will be indicated by a gradual increase in the lube oil __________. #6 In an operating diesel engine, pre-ignition can be caused by __________. #7 If fuel oil were being discharged from the waste water outlet of a fuel oil disk type centrifuge, operated as a separator, you should __________. #8 Heat damage to fuel injection nozzles can be prevented by avoiding __________. #9 One cause of diesel engine surging can be a result of __________. #10 Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver? #11 Which of the following conditions is most likely to occur if the electric starter motor pinion gear fails to disengage from the flywheel of a diesel engine after the engine has started? #12 When starting air is admitted, a diesel engine turns over very slowly without firing. The cause may be __________. #13 When an additional load is applied to a diesel engine which is using an inadequately inflated air bladder clutch unit, you can expect __________. #14 Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or __________. #15 One of the most common causes of reduction gear failure is gear wear caused by scoring as a result of __________. #16 In a diesel engine, a leaking exhaust valve can cause __________. #17 A dry-type exhaust silencer clogged with soot, will cause __________. #18 Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by __________. #19 Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the __________. #20 An operating diesel engine that suddenly loses power, is due to a/an __________. #21 Which of the following conditions is indicated by the presence of water in the scavenging air receiver? #22 When calculating the indicated power developed in a diesel engine cylinder, 1 horsepower is equivalent to '33,000 foot-pounds per minute'. What conversion factor would be used if the values are based on metric 'kilogram-meters per minute'? #23 A diesel engine indicator diagram has an area of 22 cm2 and a length of 12.5 cm. If the scale of the indicator spring is 1 mm = 1 kg/cm2, what is the cylinder mean effective pressure? #24 A diesel engine cylinder has a swept volume of 125 cubic inches and a compression ratio of 13.5 to 1. What is the clearance volume in the cylinder at top dead center? #25 Line "P" in the illustration is the __________. Illustration MO-0126 #26 The diagram shown in the illustration may be used to determine the proper operation of the engine. Which of the following statements represents an accurate interpretation of the diagram? Illustration MO-0126 #27 Which of the following conditions would NOT be considered a valid reason for the diesel engine to operate in the area indicated by letter "B" shown in the illustration? Illustration MO-0126 #28 In the pressure-volume diagram shown in the illustration, fuel injection occurs at point __________. Illustration MO-0035 #29 An indicator card or pressure-volume diagram, shows graphically the __________. #30 On the indicator card shown in the illustration, lines 'A' and 'B' indicate __________. Illustration MO-0108

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