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

USCG Motor Plants & Auxiliary Boilers (Set 31)

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Question 1 of 30

The component labeled "A" on the engine reversing device shown in the illustration, performs its function by transmitting _______. Illustration MO-0125

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30 MCQs

#1 The component labeled "A" on the engine reversing device shown in the illustration, performs its function by transmitting _______. Illustration MO-0125 #2 In order to reverse the rotation of a two-stroke cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the __________. #3 During the starting of a diesel engine, compression gases are prevented from backing into the air starting system, shown in the illustration, by the __________. Illustration MO-0046 #4 Which of the following statements is true concerning the air starting valve, labeled "III", as shown in the illustration? Illustration MO-0046 #5 What type of engine lubrication oil filter system sends filtered oil directly to the high-pressure supply gallery? #6 The device shown in the illustration is a __________. Illustration MO-0008 #7 The device shown in the illustration is classified as a/an __________. Illustration MO-0008 #8 The device shown in figure "A" of the illustration is used to __________. Illustration MO-0042 #9 The illustrated device is used to __________. Illustration MO-0050 #10 On a slow-speed, diesel-propelled vessel operating with constant slip, what is the effect on fuel consumption with an increase in shaft RPM? #11 You are onboard a vessel with a slow-speed crosshead type engine. The fuel just received has a significantly lower sulfur content than the previous bunkers. Which of the following would be a concern due to the reduced sulfur content? #12 The purpose of the interlocked three-way valve shown in the illustration is to __________. Illustration MO-0058 #13 Heavy fuel oil used in the system shown in the illustration, will have the lowest viscosity __________. Illustration MO-0058 #14 Which of the following precautions should be taken prior to starting the separator shown in the illustration? Illustration MO-0127 #15 Using the graph shown in the illustration, the oil being separated has a specific gravity of 0.87 kg/dm3 at 72.5°C. What will be the specific gravity if the temperature is lowered to 40°C? Illustration MO-0113 #16 As Chief Engineer of a slow-speed diesel engine vessel equipped with an ALCAP fuel oil purification system. You note a definite increase in the rate at which the purifier sludge tank is rising. One of the first items to check on your system would be which of the following? #17 Which of the following statements describes what will occur if the annular spaces, indicated by the letter "K" of the device shown in the illustration, became restricted? Illustration MO-0112 #18 If item "F" begins leaking during operation, which of the following operating conditions will NOT occur? Illustration MO-0112 #19 While operating the fuel oil centrifuge shown in the illustration, the fuel oil is being continuously ejected with the sludge and the seal water. The probable cause is the __________. Illustration MO-0012 #20 As shown in the illustration, which of the following conditions would be responsible for a "low-pressure in oil outlet" alarm to be indicated? Illustration MO-0127 #21 While operating the fuel oil centrifuge shown in the illustration, the bowl fails to open for sludge ejection. The probable cause is that __________. Illustration MO-0012 #22 When reassembling the bowl of the centrifuge, shown in the illustration, the alignment mark on the locking ring passes the bowl cover mark in excess of the manufacturer's specifications. This is due to __________. Illustration MO-0012 #23 According to the illustration, initial timing of fuel injection into the cylinder is controlled with the component that is identified as the letter _________. Illustration MO-0097 #24 As shown in the illustration of the fuel injection pump, the function of the area designated as "L" is to __________. Illustration MO-0061 #25 In the illustration shown, moving the component labeled "E", further to the left, will result in _____. Illustration MO-0061 #26 Which type of diesel engine fuel nozzle is shown in the illustration? Illustration MO-0059 #27 Regarding the fuel injector shown in the illustration, the purpose of piece #38 is to __________. Illustration MO-0059 #28 The item labeled #16 in the illustration is a stack of spring washers. Their function is to __________. Illustration MO-0062 #29 In a two cycle diesel engine, a Roots-type blower is usually __________. #30 Clearance volume scavenging in a turbocharged, four-stroke cycle diesel engine is accomplished __________.

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